8:23 this is Russian (well, actually USSR) quartz tube. Hand-written label states "2048 кГц" which is "2048 kHz". The "ОТК" mark on the other side is not a brand name (as someone might think), it means "Otdel Technicheskogo Kontrolya" = "Department of Technical Control", in other words it is russian "QC Passed" mark.
Camera tube is a vidicon, second phototube is a photomultiplier. Big-Arse CdS cell is teh type that was used on streetlight controls - it switched using a thermal relay
00:00 OpenMYR WiFi motor 04:32 Old component Bananza from Berlin (including the Tesla chip featured on video thumbnail) 14:14 Comptom power analyzer from Australia 17:07 "Defekt Elektronik" from Switzerland featuring Casio HL-121 and Texas Instruments TI-74 BASICALC 23:33 RoutaBoard proto boards 25:01 Hugin calculator from Sweden 27:45 Automatic door opener and e-book reader from Germany 34:10 Postcard from Australia
Awesome! So glad the calculator made it all the way down there! Hugin is a brand owned by chain of grocery/convenience stores in Sweden, they made all sorts of stuff, but that's the first calculator I've come across!
Hugin = Generic brand owned by Swedish Coop. Kooperativa Förbundet, was the old name. Really old stuff (pre KF) like this calculator might have been made by a Swedish manufacturer, like Facit or Luxor, but more likely it was made in Hong Kong or some place like that.
The Loewe device at 7:18 is a specialized type of quartz crystal used to MEASURE rather than generate a specific frequency. Used as part of an early "absorption wavemeter", the neon-filled device will glow when excited by a signal of a specific frequency. More information available in the .pdf here: www.nonstopsystems.com/radio/pdf-hell/article-tubes-in-tubes-1926.pdf
that vacuum tube that you didn't know what it was, is probably a decatron tube. it's similar to a nixi tube, only that the pins around the center light up. I used a geigercounter back when i was in school, that used them as a display Methode.
Electra Flarefire I could see if i can get a video of the geiger counter, if it still exists. I still have contact to that school, so ill see what i can do..
Tesla was Czechoslovakian company making every electronic thing you can imagine, it was one of the biggest in Europe, but after privatization in late 80s it went to mess and faded to black. It is sad, because it was really quality-made, not the cheap shit like today. Devices from 50s are very often working even today and the non-working ones are usually dead because of leaky electrolytic caps, so if you replace them it works once again. They also made wide range of reel-to-reel magnetophones, have quite a few of them. They were also starting to make computers, Tesla 8088 was one of the first, but big brother United States of Soviet Russia stopped that during that shameful time period since 1968 to 1989.
Krivulda Tesla went into oblivion after privatizing because their products weren't competitive. There wasn't some evil conspiracy, it was just that almost the entire Eastern Block industry was years behind the Western industry. The 8088 computer you are mentioning was also just a clone of an old Intel 16-bit design from the late 70ies/early 80ies. If they had been innovative as you claim, they wouldn't have copied Western designs, they would have created their own designs. Tesla was popular, particularly as a component manufacturer in the Eastern Block because there was virtually no competition. Each communist country had their own state-owned company for electronics, in East Germany it was "RFT". All of them went out of business, were split up or bought by Western companies. I understand your personal sentiments, I assume you are from the CSSR. However, your personal memories to tech from your childhood distort reality in the end. West Germany, the USA and Japan were so much more advanced when it came to electronics in the 70ies and 80ies that the designs from the Eastern Block countries would have stood no chance against them in a free market. I mean, there was a reason most people behind the Iron Curtain yearned for products from companies like Sony, Sharp and Philips. Those were just lightyears ahead.
genkiadrian Yeah, I know they were ahead, but I explained it earlier. It was the matter of RVHP (Council for Mutual Economic Assistance) who made us NOT improving our techs. It is also the reason, why automobile company Fiat is still existing and why Skoda is so unknown. Also. the Iron Curtain was really big thing there. It meant ANYTHING from outer countries could be sold there, so our engineers had only rumours about tech in the world and they had to make everything on themselves. And it felt into oblivion because after the fall of Iron Curtain and Berlinian Wall there were companies named Phillips (Netherlands) and Grundig (Germany) and they had the connection with outer countries before, so they quickly gained.
Ex-Tesla spinoffs still do exist and produce components, mostly passives or electromechanicals (ES Ostrava, Tesla Blatná, Tesla Jihlava to name few), or bulid upon technology developed during socialistic years - for example we produce worldwide supply of ONsemi concern silicon wafers/monocrystals in ex-Tesla Rožnov technological plant wich was sold off . Some of the other backend companies for semiconductor manufacturing still do exist in Rožnov as private entities as well - ultapure chemicals manufacturing and special galvanic treatments (Bárta a Cihlář s.r.o.). Precision manufacturing division of Tesla Brno is also reason why we are currenly producing over 45% of worldwide production of electron microscopes in Brno (IIRC Tescan is a company estabilished by ex-research staff from Tesla, while FEI moved in for cheap & competent workforce). I know there is some other precision machining company estabilished by ex-Tesla research staff making aerospace parts, but I forgot the name of.
Tesla components were top quality at reasonable price at that time, but tesla products were made with 2 years delay. This was the reason why tesla was not competitive.
guess who is listening this on ARF-310's :3 Tesla made so wide range of electronics in such quality...so sad we were in Soviet block, it could have worked since today in all its glory. I am still using a lot of stuff from Tesla ... due it can still be widely found around here in Slovakia.
Blue thing: Wow. Maybe a quartz. The KWH was a factory in Hermsdorf Germany (Thüringen) it was called Keramische Werke Hermsdorf. They were producing ceramic insulators, Alnico magnets, Loud speaker magnets, and IC-s. My mother used to work for them around 30 years ago. The factory was seized when Germany was united again in 1989. Nothing of the IC making is left over.
The can with blue marking at 10:27 is some Easten Germany made hybrid module. The red can on the same piece of foam is a soviet made hybrid, probably contains just a few bare transistors dies.
I like this mailbag.... the "stupid" stuff like opening the packages is sped up, but you still take things apart (and skip unscrewing the screws) and open a bunch of packages.... I didn't notice any in this video, but I also like showing post cards too! Thanks Dave.
The green DIP at 6:17 is I believe an incandescent 7 segment display, rather than vacuum fluorescent or LED. The current just heats up the segment wire and it glows orange. I once came across such a thing but in a glass envelope like a vacuum tube rather than a DIP package. The glass thing at 7:11 is almost certainly a decatron tube . When properly biased one dot will light up and each time a pulse is applied the lit dot moves clockwise one step. The tube at 7:41 does appear to be a quartz crystal, as i the one at 8:45 which is probably a much lower frequency one. I have seen many tubes of this type with varying arrangements of how to hold the crystal between the two electrodes. One I've seen in a WW2 radio had several crystals, I think 10, presumably to easily select certain specific frequencies.
21:13 Dave, you should consider applying for a singing contest. You've got my vote ! Just be sure to wear your "Negative feedback" shirt for the auditions tho ;)
The flat thing described as a rectifier, is indeed a selenium recitfier. Known as Gleich-riecht-er (joke works only in german, it would mean it smells at any moment), because when they burnt or got destroyed in some way they really smell very bad.
they could just have sold the wifi stepper module without motor, for more flexibility. just get your own stepper. also the production costs would go down drastically
I know, but they don't manufacture neither the stepper nor the esp8266. From what I can see the only thing needing manufacturing is the cover and perhaps a simple circuit board to hold the esp8266 and a motor driver.
I've always wondered what you do with mailbag items after making your videos. The sheer amount means storing it all would be difficult. I hope you don't throw out any working vintage/collectable items - I'm sure there'd be someone, somewhere in the world who would love to get their hands on some of this stuff :-)
6:20 Numitron: incandescent lines form a digit. NOT a VFD! 6:50 video tube 7:10 decatron (counter tube, however WHY does this have a "Stahlröhren" socket?) 7:20 quartz resonator 11:30 Selenium rectifier made by SEL (Standard Electric Lorenz), bridge rated for 60V AC with 300mA and capacitive loading (C)
I'm disappointed that you didn't do you're home work on most of these devices!!! You have this soap box that many of us have liked to look at, due to our shared appreciated love of technology and yet you completely shirk out that belief in you when dealing with these... I wouldn't send you an old paper towel after seeing this!
13:35 Are those Philco chips? They look just like the flat pack chips used in the Apollo AGC. Philco was awarded the contract for producing those back in the day.
Dave, the transformer in the Crompton power analyser (at 15:40) would have been hand soldered in the factory to give extra strength to take the weight of it. Wave soldered joints don't have a lot of mechanical strength.
At 7:10, that thing is a divide by counter tube. It counts pulses. The arc in the hydrogen gas inside moves with each positive pulse and you get a pulse out everytime you go around one time.
BEST MAILBAG FROM GERMANY!!! Thanks Sebastian. This was like doing another 10 years of disassembling old stuff back in the days. Loved it. THANKSSSS You know what most of the Parts are for?
I'm surprised you didn't recognise that 7-seg Minitron filament display. It pre-dates LED and has the advantage that it's readable in sunlight - it was used in petrol pumps for that reason until fairly recently. That long rectangular filter would be using just the bottom part of a TO-5 can to provide a cheap and readily available seal for the connections.
I don't care how useful it is, connecting everything via internet and wifi is a bloody terrible idea. There are far too many computer "geniuses" out there who hack and far too many morons in the industry who have jobs meant to stop them, yet constantly leave vulnerabilities. I'm sure the lack of a password was for first time set up though, a lot of internet applications and tasks do that, you're meant to add your own pretty much the second you get to configuring it.
It's NOT connected to the internet. The motor provides it's own wifi network that you connect your phone or computer to as a client. The only.one who could hack into the motor is someone who is wardriving/walking.
I usually recommend anyone who are into any kind of wired or wireless home automation/iot stuff to just use SSID's+VLAN's separated from networks where there are actual people accessing it.. In most cases only one management/user interface service needs to be accessible from the "outside" of the automation network with the option for a VPN for service/development work.
***** you can link it into your home network, as I imagine a lot of people would, with a network connection of any kind it wouldn't take long for someone who REALLY wants into it, to get into it.
It's impossible to protect against incompetence anyways when it comes to non professional tinkering with putting things together instead of buying a fully integrated system where there are any kind of security/safety aspects involved.
great video. at 6:17 there is a DIL IC type D130CCP with a F something mfg logo. I assume the IC is DDR version of SN7430 as is D130D DIL variant but what is the manufacturer logo referring to??
11:36 SEL is the brand. It was a well known manufacturer of telephones, but they also were big in railway and aviation tech. I know them well from my childhood days when I dissasembled rotary phones. In 1986 the company was sold to the french CGE and was known as Alcatel, and since 2016 it is owned by Nokia.
It would be neat if they made BGA packages that were 1mm thicker, but the entire back plate was a multi-layer capacitor so it had it's own built in decoupling.
Yep, would simplify design *and* manufacturing so much not having to waste half the board space on decoupling and downright hostile pinouts (such as demanding pet power pin caps, then putting each VDD pin in the middle of a 0.4mm spaced bus, with the only VSS pin being the EP.
The tube is a vidicon - television camera tube from the 60s and 70s. They were used in semi-professional cameras and were usually half inch or one inch diameter. 2.5 may be centimeters. Google finds are mostly in German.
I like the Swedish calculator -- "Hugin" meaning "Thought" or "Thinking", one of Odin's two raven familiars. The other, "Munin" meant "Memory" or "Remembering".
6:07 Tesla was a Czechoslovakian company manufacturing TV sets, radio sets, vinyl turntables, etc. The logo on that IC is written with the same font they used. 7:16 That is very likely a quartz crystal and the tube resembles to those used in the early telephone exchanges.
the silver square package with the blue and silver writing (81 - 13 N9) and the gold square package both shown at index 10:27 look like they are either crystal oscillators or filters. i could be wrong but its the only type of components i have ever seen in that sort of package and that vintage :
The "phototube things" are photomultiplier tubes. They are used frequently in particle physics experiments to amplify weak light signals from particle interactions (for example with a scintillator).
The comments are awesome, learning tons of stuff. Thanks everyone, good job! :D love watching the mailbags open too!.. in like flynn, nipples.. man we got the hole nine yards.
12:01 These are microwave low-noise field-effect transistors from gallium arsenide with an operating frequency of up to 8 GHz. Caution, very low operating voltage and static potential. Only work with an antistatic wrist strap, otherwise they will fail. The number at the beginning of the marking means military or aerospace purposes.
That camera tube looks like a vidicon image tube from an old Motorola security camera from the 70's, although they were probably used in other cameras too. They were notorious about getting burn in images and had to be replaced every couple of years or so.
Pretty sure the stepper is meant not to be controlled from the Web UI but some home automation hub. So it's only insecure during setup, then it's controlled by a LAN device.
I was attracted in by the circuit you used for the thumbnail. Tesla is a czech company that used to make chips and electronics for socialist block before 1989. We used to use computers built from their components in schools for education. It still exists but doesn't produce electronics components anymore: en.wikipedia.org/wiki/Tesla_(Czechoslovak_company)
As an IOT MCU, the ESP8266 is far too stupid to be used as a zombie device, mostly because of the lack of an operating system or ability to execute anything outside of rom. You can definitely hack one to gain access, but reprogramming it to do something else is fairly unlikely unless you know the manufacturer has manually implemented this and how they did it.
Completely honest question here. I want to make some tech. Should I crowdfund it? Should I opensource (to a degree or release the details publicly) it?
To be fair, in the case of the dead e-book reader, the clock speed of the device is probably low enough that the decoupling isnt as critical as it might have been if it were higher, also if the ground plane is close to the signal plane (thin inter-layer insulation) the ground plane itself will act as a makeshift decoupling cap too.
Dave you should open a museum for all the vintage electronics goodies you have collected, charge a couple of bucks entrance...winner winner chicken dinner!
They used 7 segment incandescent filiment numerical displays like that in old BART (Bay Area Rapid Transit) ticket vending machines machines, only they were bulbs like nixie tubes. Nice old components!!
13:20 the red/black boxy thing: This is a diode matrix. One old application: Old digitally controlled TV's as 7 segment decoders for the LED display.
8:23 this is Russian (well, actually USSR) quartz tube. Hand-written label states "2048 кГц" which is "2048 kHz". The "ОТК" mark on the other side is not a brand name (as someone might think), it means "Otdel Technicheskogo Kontrolya" = "Department of Technical Control", in other words it is russian "QC Passed" mark.
toxanbi in soviet Russia, Quality control passes you!
Someone always knows, thanks!
Hi. I was just writing the same details, while I seen your answer. Is great when somebody still can read the old school soviet devices. Cheers!
@@EEVblog 7:17 also looks like a quartz crystal. The stone looks like a handmade quartz piece.
Camera tube is a vidicon, second phototube is a photomultiplier. Big-Arse CdS cell is teh type that was used on streetlight controls - it switched using a thermal relay
Is that light sensor the same technology as the ldr photo resistors It looks like a giant ldr
00:00 OpenMYR WiFi motor
04:32 Old component Bananza from Berlin (including the Tesla chip featured on video thumbnail)
14:14 Comptom power analyzer from Australia
17:07 "Defekt Elektronik" from Switzerland featuring Casio HL-121 and Texas Instruments TI-74 BASICALC
23:33 RoutaBoard proto boards
25:01 Hugin calculator from Sweden
27:45 Automatic door opener and e-book reader from Germany
34:10 Postcard from Australia
yay, i was thinking i'd have to offer to pay someone to come up with an index.
12:01 - 3П321А-2 is a GaAs Shottky barrier SHF (up to 8 GHz) n-channel FET transistor.
One of the best mail bags I've seen yet, I love seeing vintage electronics!
6:06 TESLA was an Czechoslovakian company (1950's-1990's) producing electronics parts and devices in a wide spectrum.
tesla still exist, nowadays tesla produce transmitter and transmitter parts like hige power tubes www.tesla.cz/en/domu/
They were best in the eastern block
Awesome! So glad the calculator made it all the way down there! Hugin is a brand owned by chain of grocery/convenience stores in Sweden, they made all sorts of stuff, but that's the first calculator I've come across!
Hugin = Generic brand owned by Swedish Coop. Kooperativa Förbundet, was the old name. Really old stuff (pre KF) like this calculator might have been made by a Swedish manufacturer, like Facit or Luxor, but more likely it was made in Hong Kong or some place like that.
The component with the matrix of red dots is an AEG diode matrix used for driving a 7-segment display.
The Loewe device at 7:18 is a specialized type of quartz crystal used to MEASURE rather than generate a specific frequency. Used as part of an early "absorption wavemeter", the neon-filled device will glow when excited by a signal of a specific frequency. More information available in the .pdf here:
www.nonstopsystems.com/radio/pdf-hell/article-tubes-in-tubes-1926.pdf
Wierd tube with circle of electrodes might be a dekatron
that vacuum tube that you didn't know what it was, is probably a decatron tube. it's similar to a nixi tube, only that the pins around the center light up. I used a geigercounter back when i was in school, that used them as a display Methode.
*Dekatron
Fun counting tubes. Old school way to keep track of pulses. The Geiger counter would have been something to see.
en.wikipedia.org/wiki/Dekatron
I was thinking it was a hollow cathode lamp for atomic absorption spectrometery. it seems this large tubular layout might have multiple uses
Electra Flarefire
I could see if i can get a video of the geiger counter, if it still exists. I still have contact to that school, so ill see what i can do..
+lbochtler .
Tesla was Czechoslovakian company making every electronic thing you can imagine, it was one of the biggest in Europe, but after privatization in late 80s it went to mess and faded to black. It is sad, because it was really quality-made, not the cheap shit like today. Devices from 50s are very often working even today and the non-working ones are usually dead because of leaky electrolytic caps, so if you replace them it works once again. They also made wide range of reel-to-reel magnetophones, have quite a few of them.
They were also starting to make computers, Tesla 8088 was one of the first, but big brother United States of Soviet Russia stopped that during that shameful time period since 1968 to 1989.
Krivulda Tesla went into oblivion after privatizing because their products weren't competitive. There wasn't some evil conspiracy, it was just that almost the entire Eastern Block industry was years behind the Western industry.
The 8088 computer you are mentioning was also just a clone of an old Intel 16-bit design from the late 70ies/early 80ies. If they had been innovative as you claim, they wouldn't have copied Western designs, they would have created their own designs.
Tesla was popular, particularly as a component manufacturer in the Eastern Block because there was virtually no competition. Each communist country had their own state-owned company for electronics, in East Germany it was "RFT". All of them went out of business, were split up or bought by Western companies.
I understand your personal sentiments, I assume you are from the CSSR. However, your personal memories to tech from your childhood distort reality in the end. West Germany, the USA and Japan were so much more advanced when it came to electronics in the 70ies and 80ies that the designs from the Eastern Block countries would have stood no chance against them in a free market. I mean, there was a reason most people behind the Iron Curtain yearned for products from companies like Sony, Sharp and Philips. Those were just lightyears ahead.
genkiadrian Yeah, I know they were ahead, but I explained it earlier. It was the matter of RVHP (Council for Mutual Economic Assistance) who made us NOT improving our techs. It is also the reason, why automobile company Fiat is still existing and why Skoda is so unknown. Also. the Iron Curtain was really big thing there. It meant ANYTHING from outer countries could be sold there, so our engineers had only rumours about tech in the world and they had to make everything on themselves. And it felt into oblivion because after the fall of Iron Curtain and Berlinian Wall there were companies named Phillips (Netherlands) and Grundig (Germany) and they had the connection with outer countries before, so they quickly gained.
Ex-Tesla spinoffs still do exist and produce components, mostly passives or electromechanicals (ES Ostrava, Tesla Blatná, Tesla Jihlava to name few), or bulid upon technology developed during socialistic years - for example we produce worldwide supply of ONsemi concern silicon wafers/monocrystals in ex-Tesla Rožnov technological plant wich was sold off . Some of the other backend companies for semiconductor manufacturing still do exist in Rožnov as private entities as well - ultapure chemicals manufacturing and special galvanic treatments (Bárta a Cihlář s.r.o.).
Precision manufacturing division of Tesla Brno is also reason why we are currenly producing over 45% of worldwide production of electron microscopes in Brno (IIRC Tescan is a company estabilished by ex-research staff from Tesla, while FEI moved in for cheap & competent workforce). I know there is some other precision machining company estabilished by ex-Tesla research staff making aerospace parts, but I forgot the name of.
Tesla components were top quality at reasonable price at that time, but tesla products were made with 2 years delay. This was the reason why tesla was not competitive.
guess who is listening this on ARF-310's :3
Tesla made so wide range of electronics in such quality...so sad we were in Soviet block, it could have worked since today in all its glory. I am still using a lot of stuff from Tesla ... due it can still be widely found around here in Slovakia.
Finally, a mailbag. I wish these were more regular. Like it was, once a week.
And others complain that's too many...
I don't get them really. How about a poll of some sort to check opinion?
EEVblog , Then it's not "everyone's favorite segment". It is mine! :)
Same
Just to think that mine is someone's favorite segment on the Cody's Lab channel. (Cody's Mine, wherein he explores a mine on his family's property.)
Best mailbag ever due to Dave being like WTF are these things? LOL
Love the old "what the heck is it?" electronics components.
Blue thing: Wow. Maybe a quartz. The KWH was a factory in Hermsdorf Germany (Thüringen) it was called Keramische Werke Hermsdorf. They were producing ceramic insulators, Alnico magnets, Loud speaker magnets, and IC-s. My mother used to work for them around 30 years ago. The factory was seized when Germany was united again in 1989. Nothing of the IC making is left over.
Love the passion as always Dave!
Contains atoms! really need a label to tell us that.
Wow-wow-wow-wow...
4:52 lol
Dave turned on the wah-wah effect
That was nothing compared to the "I love the nipple" moment LOL
Awesome mailbag!! Love old stuff!!
The can with blue marking at 10:27 is some Easten Germany made hybrid module. The red can on the same piece of foam is a soviet made hybrid, probably contains just a few bare transistors dies.
Your mystery valve at 7:05, could it be a dekatron?
I'm pretty sure that it is a dekatron
A TI74 ! I bought one in 1988 and it's still on my desktop still working. Great stuff.
I like this mailbag.... the "stupid" stuff like opening the packages is sped up, but you still take things apart (and skip unscrewing the screws) and open a bunch of packages.... I didn't notice any in this video, but I also like showing post cards too! Thanks Dave.
The green DIP at 6:17 is I believe an incandescent 7 segment display, rather than vacuum fluorescent or LED. The current just heats up the segment wire and it glows orange. I once came across such a thing but in a glass envelope like a vacuum tube rather than a DIP package.
The glass thing at 7:11 is almost certainly a decatron tube . When properly biased one dot will light up and each time a pulse is applied the lit dot moves clockwise one step.
The tube at 7:41 does appear to be a quartz crystal, as i the one at 8:45 which is probably a much lower frequency one. I have seen many tubes of this type with varying arrangements of how to hold the crystal between the two electrodes. One I've seen in a WW2 radio had several crystals, I think 10, presumably to easily select certain specific frequencies.
"Nice stamps!" he says. Next second he sticks a dirty big knife through them!
21:13 Dave, you should consider applying for a singing contest. You've got my vote !
Just be sure to wear your "Negative feedback" shirt for the auditions tho ;)
Incredibly interesting old component stuff, make an separate video about them, please!
And thanks to the person sending them in!
The flat thing described as a rectifier, is indeed a selenium recitfier. Known as Gleich-riecht-er (joke works only in german, it would mean it smells at any moment), because when they burnt or got destroyed in some way they really smell very bad.
wait, $80.000 to control a stepper motor via a webserver ran by an esp8266? I'm pretty sure I could write the code for this in half an hour.
Its for manufacturing costs man.
they could just have sold the wifi stepper module without motor, for more flexibility. just get your own stepper. also the production costs would go down drastically
I know, but they don't manufacture neither the stepper nor the esp8266. From what I can see the only thing needing manufacturing is the cover and perhaps a simple circuit board to hold the esp8266 and a motor driver.
It seems like a mostly pointless product to me. A motor you can control remotely?
BenjaminGoose
Could be cool for remotely adjusting things like where the vent of an air conditioner is pointing.
Hi. The Band Pass Filters are the electro-mechanical ones used 3 decades ago in transceivers. Cheers.
I've always wondered what you do with mailbag items after making your videos. The sheer amount means storing it all would be difficult. I hope you don't throw out any working vintage/collectable items - I'm sure there'd be someone, somewhere in the world who would love to get their hands on some of this stuff :-)
6:20 Numitron: incandescent lines form a digit. NOT a VFD!
6:50 video tube
7:10 decatron (counter tube, however WHY does this have a "Stahlröhren" socket?)
7:20 quartz resonator
11:30 Selenium rectifier made by SEL (Standard Electric Lorenz), bridge rated for 60V AC with 300mA and capacitive loading (C)
I'm disappointed that you didn't do you're home work on most of these devices!!! You have this soap box that many of us have liked to look at, due to our shared appreciated love of technology and yet you completely shirk out that belief in you when dealing with these... I wouldn't send you an old paper towel after seeing this!
13:35 Are those Philco chips? They look just like the flat pack chips used in the Apollo AGC. Philco was awarded the contract for producing those back in the day.
@13:00 that's a CDS style light sensor from a Street Light.
Dave, the transformer in the Crompton power analyser (at 15:40) would have been hand soldered in the factory to give extra strength to take the weight of it. Wave soldered joints don't have a lot of mechanical strength.
At 7:10, that thing is a divide by counter tube. It counts pulses. The arc in the hydrogen gas inside moves with each positive pulse and you get a pulse out everytime you go around one time.
I'd love to see some in-depth videos on the Berlin old components extravaganza! Lots of interesting stuff that peaked my interest.
BEST MAILBAG FROM GERMANY!!!
Thanks Sebastian.
This was like doing another 10 years of disassembling old stuff back in the days.
Loved it. THANKSSSS
You know what most of the Parts are for?
WiFi motor with power wires required??? WTF! WHY?
+Brian McConkey Expertly trolled, sir! **salute**
Joe Connor That would be ideal.
7:06 could be one of those weird shift regiter o counter tube used in very early calculators ?
I almost fell off my chair when I saw the collection of old components... Still wiping the drool off my keys. Would just die to have that collection!!
I'm surprised you didn't recognise that 7-seg Minitron filament display. It pre-dates LED and has the advantage that it's readable in sunlight - it was used in petrol pumps for that reason until fairly recently.
That long rectangular filter would be using just the bottom part of a TO-5 can to provide a cheap and readily available seal for the connections.
I don't care how useful it is, connecting everything via internet and wifi is a bloody terrible idea. There are far too many computer "geniuses" out there who hack and far too many morons in the industry who have jobs meant to stop them, yet constantly leave vulnerabilities. I'm sure the lack of a password was for first time set up though, a lot of internet applications and tasks do that, you're meant to add your own pretty much the second you get to configuring it.
It's NOT connected to the internet. The motor provides it's own wifi network that you connect your phone or computer to as a client. The only.one who could hack into the motor is someone who is wardriving/walking.
I usually recommend anyone who are into any kind of wired or wireless home automation/iot stuff to just use SSID's+VLAN's separated from networks where there are actual people accessing it.. In most cases only one management/user interface service needs to be accessible from the "outside" of the automation network with the option for a VPN for service/development work.
***** you can link it into your home network, as I imagine a lot of people would, with a network connection of any kind it wouldn't take long for someone who REALLY wants into it, to get into it.
It's impossible to protect against incompetence anyways when it comes to non professional tinkering with putting things together instead of buying a fully integrated system where there are any kind of security/safety aspects involved.
If you have to be on the local net work to use it whats the issue? I wouldn't use them for mission critical stuff though.
7:06 looks like one of those stylish circular bargraph or dot tubes....
great video. at 6:17 there is a DIL IC type D130CCP with a F something mfg logo. I assume the IC is DDR version of SN7430 as is D130D DIL variant but what is the manufacturer logo referring to??
11:36 SEL is the brand. It was a well known manufacturer of telephones, but they also were big in railway and aviation tech. I know them well from my childhood days when I dissasembled rotary phones.
In 1986 the company was sold to the french CGE and was known as Alcatel, and since 2016 it is owned by Nokia.
It would be neat if they made BGA packages that were 1mm thicker, but the entire back plate was a multi-layer capacitor so it had it's own built in decoupling.
Yep, would simplify design *and* manufacturing so much not having to waste half the board space on decoupling and downright hostile pinouts (such as demanding pet power pin caps, then putting each VDD pin in the middle of a 0.4mm spaced bus, with the only VSS pin being the EP.
That thing at 11:34 is selenium rectifier. Siemens halske also made them.
9.53, that's a photomultiplier tube, my high school thesis involved those things.. Fascinating stuff
13:12 ... that AEG DM12-9-3 is a diode matrix and works as an encoder for 7-segment displays. www.radiomuseum.org/tubes/tube_dm12-9-3.html
I just love the tone of your voice when you're all "Ok... what is that?"
The tube is a vidicon - television camera tube from the 60s and 70s. They were used in semi-professional cameras and were usually half inch or one inch diameter. 2.5 may be centimeters. Google finds are mostly in German.
Minitrons are similar to Numitrons but in a DIP package. They were once used in avionics and are still being manufactured for that purpose.
douro20 can you name a modern aircraft model that still uses minitrons? 🤔
Can't say off the top of my head; all I know is they produce them for the purpose of repair/overhaul.
douro20 i last recall them on the md11s before the conversions
douro20 i last recall them on the md11s before the conversions
I like the Swedish calculator -- "Hugin" meaning "Thought" or "Thinking", one of Odin's two raven familiars. The other, "Munin" meant "Memory" or "Remembering".
Switch and lever actually has a really really cool channel here on youtube !
Teardown that band filter I am really curious to see that...
THANK YOU VERY MUCH!
love the texas calc interior.
Would be cool to have a video of you experimenting with these old devices and showing them in action.
6:09 That Tesla MAC16A is a nice analog 16:1 multiplexer with only 70nA of leakage current. I like it.
I have few of these in a draw somewhere.They look so good with that gold plating and ceramic package.
Keep this up and Dave can open Australia's first calculator museum!
6:07 Tesla was a Czechoslovakian company manufacturing TV sets, radio sets, vinyl turntables, etc. The logo on that IC is written with the same font they used.
7:16 That is very likely a quartz crystal and the tube resembles to those used in the early telephone exchanges.
the silver square package with the blue and silver writing (81 - 13 N9) and the gold square package both shown at index 10:27 look like they are either crystal oscillators or filters. i could be wrong but its the only type of components i have ever seen in that sort of package and that vintage :
The "phototube things" are photomultiplier tubes. They are used frequently in particle physics experiments to amplify weak light signals from particle interactions (for example with a scintillator).
Dave where did you get that knife ?? And where can i get one - if possible ?
Another great mailbag, love the old school stuff !
The comments are awesome, learning tons of stuff. Thanks everyone, good job! :D love watching the mailbags open too!.. in like flynn, nipples.. man we got the hole nine yards.
Who doesnt love nipples? I mean really!
12:01 These are microwave low-noise field-effect transistors from gallium arsenide with an operating frequency of up to 8 GHz. Caution, very low operating voltage and static potential. Only work with an antistatic wrist strap, otherwise they will fail. The number at the beginning of the marking means military or aerospace purposes.
The camera tube was made in the former East Germany, as well as the chip labeled D130CCP.
I love the old chip packages....
quart tubes were used for radio communication. there is a youtube video documenting their production in the seventies. interesting and work intensive
Another nice episode, thank you Dave. I'm wandering about one point; do you have more "calculators" than DMMs at the moment?
Haven't watched one of these for a while!
That camera tube looks like a vidicon image tube from an old Motorola security camera from the 70's, although they were probably used in other cameras too. They were notorious about getting burn in images and had to be replaced every couple of years or so.
Pretty sure the stepper is meant not to be controlled from the Web UI but some home automation hub. So it's only insecure during setup, then it's controlled by a LAN device.
Dave, out of curiosity, where on earth do you store all these mail bags you get lol? i reckon you have mountain by now!
I was attracted in by the circuit you used for the thumbnail. Tesla is a czech company that used to make chips and electronics for socialist block before 1989. We used to use computers built from their components in schools for education.
It still exists but doesn't produce electronics components anymore: en.wikipedia.org/wiki/Tesla_(Czechoslovak_company)
7:15 looks like some kind of indrcator tube?
Hi Dave,
I was wondering where I can get a nice letter opener like yours in the USA...
Thanks
I like those switch on the swedish calculator.
13:05 open it up, it's bugging me too?
Lots of good stuff in this episode : )
what happens to all the cool calculators?
As an IOT MCU, the ESP8266 is far too stupid to be used as a zombie device, mostly because of the lack of an operating system or ability to execute anything outside of rom. You can definitely hack one to gain access, but reprogramming it to do something else is fairly unlikely unless you know the manufacturer has manually implemented this and how they did it.
Completely honest question here. I want to make some tech. Should I crowdfund it? Should I opensource (to a degree or release the details publicly) it?
"Touch buttony things". You made my day.
could the bypass caps be positioned on the edges because the main chip isn't running fast enough to be effected by it?
Haha Love the first few seconds where he holds the big ass knife.
I believe that's a Vidicon tube similar to the one that Mike has torn down!
Where are the link to the proto PCB boards ?
thank you.
DJ
Hey Dave! Good on ya ;)
10:37 might be some sort of a diode. Can you test it? :D
I could be wrong but I think those phototubes are light amplification tubes from very primitive night vision devices. [citation needed]
Indeed. Looks like a Vidicon tube or similar.
Uh-huh my motor got a virus and started to ddos DNS server :u
12:25 - its a GaAs FET, military version, HF & static sensitive.
natural gold :-) 8 GHz
To be fair, in the case of the dead e-book reader, the clock speed of the device is probably low enough that the decoupling isnt as critical as it might have been if it were higher, also if the ground plane is close to the signal plane (thin inter-layer insulation) the ground plane itself will act as a makeshift decoupling cap too.
Dave you should open a museum for all the vintage electronics goodies you have collected, charge a couple of bucks entrance...winner winner chicken dinner!
They used 7 segment incandescent filiment numerical displays like that in old BART (Bay Area Rapid Transit) ticket vending machines machines, only they were bulbs like nixie tubes. Nice old components!!
Is the red grid thingy maybe a core memory module?