As someone who doesn't care about any number after the dot in his £10 Chinese voltmeter, I applaud your dedication to getting the 10th decimal of your instruments right
@@andrean_7725 apparently some marine or sailer guy managed to kill himself with a multimeter on continuity check powered by a 9V battery by shoving the probes under his skin. 🤦♂️
To calibrate a voltage reference you need two additional voltage references that you rub together in an alternating pattern until they are all with in spec.
- "Oh snap! Marco uploaded a new video. Imma watch it!" - Excuse me, we are in the middle of a Zoom meeting... - I know. See ya later! *leaves call* - ...
I was just thinking about this channel. Hope the updates are further apart due to you being good busy and not anything else. We all got day jobs and I appreciate the extra effort to post these vids.
Memories!! I used to sell Fluke test equipment... and I very much remember the launch of the Fluke 5700 calibrator. That was 1988... man! How time has flown! I remember selling a 5700 to Siemens after I went to their office in Bayswater, Victoria on a "fishing trip" with a Fluke and Philips catalog prospecting for names and opportunities and six months later got this massive order for Fluke Calibration equipment.....
It's amazing that you put so much work into these videos while consistently demonstrating your sense of humor. This is some of the best content on RUclips.
By far the most interesting RUclips channel regarding electronics, with a great sense of humour! I always learn something new and actually you gave me a wonderful idea for my next project with the flexible PCBs! Keep it up Marco!! 😉
I really missed that humor, been quite a while but the wait was well worth it. By the way: (Excuse me if you already know that) Last open door day at the PTB they were calibrating instruments for free. Still got contacts there, so just reply if you are interested and i´ll try to find out for you, if they´ll do it again next open door day. Then again you do´nt seem to have any problems getting the job done yourself :-)
Marco, I have zero, I repeat, ZERO idea what's going on here but your content, your knowledge and humor is GREAT! I can only wish I knew half of electronics as you do 🙌
My coworkers asked me what the last video I watched was (this one), and they have promised to never ask again. Thank you for compelling content and actual humor.
Your genius videos teach me a lot about electronics and humility ! As both qualified master electronic technician and master electrician your knowledge exceeds mine by far.
Electrical engineer: The leakage current through these six layers of top grade insulation material is surely negligible. Metrologist: Can we talk about that for a minute?
@9:51 - RE silicone heating mats - back when I was an electrician, we used a series of Greenly silicone heating mats to soften and bend plastic conduit for service installation. Mid 90's probably.
5 mins in and this reminds me of talking to my mate about engineering stuff...i get lots of it but eventually it goes over my head. I need more practice and cool machines to test on
Yes, the 3458A self cal would be an interesting topic for a video! I also noticed these (very small) jumps and it would be interesting to learn more about them :)
I would love to see a video about your data collection setup and work flow. Very interested in grafana, and would enjoy seeing how you capture and curate all your data points.
I actually took the time today to put a Like on every one of your videos, because they are WORTH IT. You put out very very decent videos filled with entertainment and factual, professional work that is both interesting and accurate. Good on ya, mate. Here's a few ppm's for your effort. . . . . . . . . . . .
i dont understand and keep up with the things you mentioned (around 15% understood) but loving to watch till the end. soo dense and informative! and also fun! thanks for your great videos
Sometime in the 1960's (I believe) Philips published a design brief about an ovenized reference voltage source that was built around two zener diodes. Or actually one avalance type (positive tempco) and one zener type (negative tempco). Additionally there were several resistors. In short their idea was based on utilizing an avalance type (higher voltage) diode as the pre-regulator and the lower voltage (zener) as the output stage. Besides selected nominal voltages, they trimmed the resistors to provide an optimal current and thereby a good compesation. I myself remember building a 10 V reference from a 1N825 temperature compensated zener that to my understanding consisted of one zener and two silicon diodes in in series inside an ordinary (DO-35?) package plus my added op-amp. I also at first made a mistake that prevented a start-up. Needed an additional bias resistor for correcting that.
You could order a charging module for lithium ion batteries with integrated buck-boost-converter for your voltage reference from banggood or ebay. They are not really expensive and you would eliminate the voltage drop when the batteries got discharged. Some modules even include a lcd screen with measurement of voltage and amperage and the ability to set these values with direct visual feedback. Even the transfered energy while charging can be monitored. Let me know, if this "wink" in another direction has solved the ppm-drift of your device in the end. By the way, it does not matter what your videos are about. Regardless of them being about cnc, 3d-printing, electronics or harvesting fresh condensators with your dog; they all satisfy my initial expectation when viewing a new video from you. The sound of your voice and the very distinct presentation of the various topics is very relaxing and inspireing to me. Maybe you could update your viewers on the progress with your cnc machine since you build the machine. What are you fabricating the most and what else do you use it for? Greetings from Rhineland Palatine in Germany by some guy who is building a 3-D Printer you would have build nearly exactly in the same way.
You know I'm a mechanical engineer so most of this just goes over my head, but it's just so cool to look at. Also, where else will I get my German humor fix?
6:28 on the 895a and 887a Fluke the pre regulation voltage is adjusted to 18.0 +/ - 0.1 Volts via a trimmer resistor.. they also say to measure the peak to peak AC ripple on the 18 volt DC. Spec is be less than 200 uV. The 895A differential voltmeter manual is from 1966..
Speaking of low-capacitance galvanic isolation (like the batteries you propose) - how much power does the circuitry consume, on average? I may have a very nice work-around for
@@reps A bit of both. Blue LEDs ~420nm act as excellent photo-collectors provided they are excited by wavelength matched violet LEDs or lasers (405nm). It is possible to get a photonic efficiency of up to 40% (!) and end-to-end efficiency (including the photonic efficiency of the LED of ~ 10%. In other words, you have a violet (visible, safe) "light source" consuming 10W of electrical input at one end and a Blue LED array outputting (ideally) 1W of electrical power (and unfortunately 1.5W of radiation-heat, ideally) at the far-end. www.researchgate.net/publication/273416580_All-optical_power_and_data_transfer_in_catheters_using_an_efficient_LED
@@AdityaMehendale Wow, fantastic info! Thank you for sharing. I vaguely remember seeing 20% being possible with optimal LEDs and modern solar panel (this might just be a theoretical value, not sure if anybody tried) but your method would be a lot cheaper and more compact. Love it!
@@repsA few nice things about the wavelengths: - The "royal blue" LEDs have an MPPT-voltage ~3V that is enough to power most MCUs without needing a dc/dc converter - As the photonic efficiency is 40%, you "only" need to dump 60% of the power as heat at the receiving end (so 1.5W/W instead of 4W/W as in a solar panel) - Not only can the violet power transmitter be modulated to send data forward, but also the blue "receiver" can be load-modulated to send data backwards (as demo'd in the video); the paper reports a few100kbps to be possible in the backwards direction without separate optics - veri smol (1mmx1mm) Tx and Rx for ~ 100mW (excluding space needed for collimators/fibers/etc) - 395-405nm violet lasers (no collimators needed!) are cheap and easy to find from blu-ray stuff - 430-450nm blue InGaN LEDs are commonly used in remote-phosphor lamps - Photo electro luminescence is frickin' cool (more info on this in the paper) It basically scratches every itch I had with galvanic isolation for oscilloscope-probes, bio-measurements, high-side gate-drivers, HV-stuff, contactless stuff, and more... Only 'issue' is the required line-of-sight (or fiber).
Using ceramic insulation would give you more stable temps because of the low thermal transfer. You can use brazing to hermetically seal those feet and it will draw solder in. Just use plenty of solder paste around the side of the feet and stick in the hole. Heat the housing and paste and as it cools it will draw in the solder as it hardens.
I would only trust High end lead acids for up to 3 years max, in any mission critical devices. 5 Years if it is not important. I used to see them Dead just after 2 years as a fire alarm inspector. Even the best brands had battery's die after 3 years. I am surprised you do not have a high end lead acid battery tester. BTW love the videos.
18.6 volts is the industry standard voltage for chargers for 16 Volt lead-acid batteries. BTW, I've had the tour of the NIST lab that designed and built the Josephson Junction Voltage standards. (Also Time and Frequency and the F1 fountain clock.) For a tech guy into high precision it was like taking a trip to Mt. Olympus. Just damn. I was pleased with my Fluke 5.5 digit bench meter and my WWVB disciplined Xtal standard until that day. But I can never be happy again.
6:28 those common Hakko CHP-170 cutters are just rebrands of Piergiacomi ones. Here in the UK the originals are significantly cheaper than the Hakko rebrands. Plus the originals have yellow handles instead, which looks much better.
@@NiHaoMike64 what do you mean fake? Piergiacomi are the actual manufacturers... They just make a red version for Hakko. Hakko do not manufacture them.
@@lost4468yt A counterfeit product that claims to be that brand but really isn't. A lot of the time, such fakes are far lower in quality than the real thing.
@@NiHaoMike64 oh I thought you were saying that Piergiacomi aren't legitimate, when they absolutely are. Also what happened to them? I don't think there are counterfeit ones out there, as the product is not expensive and has a rather unique production, I would doubt there are any counterfeits of them. Maybe you just had a bad pair? Also I assume you know that you can't cut stronger metals or thick things with them? They (and the Hakko version, and just this type of cutter in general) will easily get damaged from doing that.
@@lost4468yt As I recall, they dulled very quickly cutting some pieces of CAT3 cable. I then found that it took next to no effort to sharpen them again with a file but they wouldn't stay sharp for long, indicating the tips were not properly hardened.
Holy reflection, what ... , ahm let me ...., I mean ...., yeah was quite a bit of Information. There might be some extended heat in my sealed enclosure too, the one up top the shoulders. To cool down I gonna repair my newly aquired Stelltrenntrafo from anno dunnemals (some long time in the past), enjoying % with doubledigits. Echt Klasse was du da jedes Mal raushaust.
What we should do next? Send one to the museum of everything else and see Sam bend it so its fluctuations in ppm will be used to voltage control an obnoxious drone or GameBoy Mega Machine... Using a flexible PCB just begs for a circuit bend.
What do you think about using aluminium PCBs to keep temperatures homogenous? (I just saw jlcpcb are doing them). Using flex PCBs to reduce stress is ingenious, is this something measured/studied? Stress distributions in flexible inhomogeneous composite materials is not straightforward, at least with FR4 you know it's going to dominate the behaviour, but with flex PCBs the traces are as stiff as the support (I guess), so you could get something weird or unexpectedly high stress
yes, that JLC price is incredible, I hope it lasts a little longer so that I can come up with some cool project for it ... the whole PCB thermal expansion vs. precision resistor story is a bit pseudo-sciency admittedly. there is a vishay paper stating that only thick film resistors are affected and that solder joints are the worst offenders. but I liked the idea too much to listen to these reasonable sources :)
I particularly liked the part where you mentioned ppms.... 🙂 And its always nice to de-stress after a particularly challenging project by playing with some playdough... The "re-cycling" watersplash & mention of eels was nice.... I'm assuming they were electric eels ? 🤔 From the Emerald Isle 😎👍☘️🍺
im pretty sure i can make that circuit bend a little worse if you want me too hahaha. :D.
Awesome to see you here! I have been watching reps and look mum no computer for years now! The reference made me smile. Hope to see you here again!
They should make VFD displays that have 16-segment Pagan runic font... Just for you, my friend.
The "look mum no computer" reference at 10:50 got me good 😁
Indeed
I laughed way too hard at that!
right? shots fired 😂😂😂
funny enough LMNC music played in Furze's video yesterday
@@DouglasFish Ha! We noticed that too!
I'm sure that jump in voltage in 2020 was just a coincidence, it was otherwise such an excellent year
It was probably just a... Fluke 😎
@@w04hparasites? flukes? in the liver? ewwww!
2020: The Year the Voltage Standards Went Crazy!
@@jensknudsen4222 2020: The year everything went crazy.
As someone who doesn't care about any number after the dot in his £10 Chinese voltmeter, I applaud your dedication to getting the 10th decimal of your instruments right
my dear god the 9v and the 1.5v battery in series killed me
10.5V is way to low to be harmful, I smell you're lying!!
@@andrean_7725 What if he choked on it?
Eating the vintage foam was a nice touch... 😋
@@andrean_7725 apparently some marine or sailer guy managed to kill himself with a multimeter on continuity check powered by a 9V battery by shoving the probes under his skin. 🤦♂️
@@power-max _What?!_
To calibrate a voltage reference you need two additional voltage references that you rub together in an alternating pattern until they are all with in spec.
🤣
That is a niche joke but goddammit it is my niche 😂😂
I know Marco, your knowledge about electronics scares me, sometimes.
"look mum no computer" was very funny tho.
Very nice video.
I got a mention!....whoop whoop!
Finally, my favourite volt-nut is back.
As always, a stellar job, Marco! More to come pls! 🎉
Gods have blessed us. All hail the marco gods
- "Oh snap! Marco uploaded a new video. Imma watch it!"
- Excuse me, we are in the middle of a Zoom meeting...
- I know. See ya later! *leaves call*
- ...
That capacitor tweezer is cool :D
They're called the Miniware DT71. They look great but they have a couple design oofs
I was just thinking about this channel. Hope the updates are further apart due to you being good busy and not anything else. We all got day jobs and I appreciate the extra effort to post these vids.
Nice to have the Electronics "Bernd das Brot" back with another wonderful video.
That's my new favourite description for this channel...
@@normanmacdonald9411 "Mist..."
@@normanmacdonald9411 or... "Bernd das Widerstand"
Memories!! I used to sell Fluke test equipment... and I very much remember the launch of the Fluke 5700 calibrator. That was 1988... man! How time has flown! I remember selling a 5700 to Siemens after I went to their office in Bayswater, Victoria on a "fishing trip" with a Fluke and Philips catalog prospecting for names and opportunities and six months later got this massive order for Fluke Calibration equipment.....
It's amazing that you put so much work into these videos while consistently demonstrating your sense of humor. This is some of the best content on RUclips.
Those censored holes, really made my day... Love the gems you put in your videos. All the info is serious, also love it.
the look mum no computer reference made me spill my coffee.
I kept it contained but it did get into my nose
That came out of nowere, yeah. To be fair, Marco and Sam are both very interesting individuals with a unique skillset.
as he flipped the board over i said "huh, looks like more like a syn-"
then he referenced sam and i had to pause the video and sweep for bugs again.
LOL , i like both channels for VERY different reasons
By far the most interesting RUclips channel regarding electronics, with a great sense of humour! I always learn something new and actually you gave me a wonderful idea for my next project with the flexible PCBs! Keep it up Marco!! 😉
I really missed that humor, been quite a while but the wait was well worth it. By the way: (Excuse me if you already know that) Last open door day at the PTB they were calibrating instruments for free. Still got contacts there, so just reply if you are interested and i´ll try to find out for you, if they´ll do it again next open door day. Then again you do´nt seem to have any problems getting the job done yourself :-)
I just bodge up microcontroller circuits on stripboard.... so it's such a delight to watch an artist at work like this.
Marco, I have zero, I repeat, ZERO idea what's going on here but your content, your knowledge and humor is GREAT! I can only wish I knew half of electronics as you do 🙌
> "10-V source"
> "9V+AA"
Oh God no
I mean... who cares if you're off by 5%
@@wesleymays1931 oh, you just need to slightly discharge the AAA and you're golden!
@@666Tomato666 ESR: no
My coworkers asked me what the last video I watched was (this one), and they have promised to never ask again. Thank you for compelling content and actual humor.
I loved the "look mum no computer" reference! I about spit out my coffee!
„Still hasn’t recovered from being assembled 7days ago“ killed me
So that's why babies just cry all the time
Technically fascinating, hysterically funny. Bravo my friend.
Your genius videos teach me a lot about electronics and humility ! As both qualified master electronic technician and master electrician your knowledge exceeds mine by far.
Electrical engineer: The leakage current through these six layers of top grade insulation material is surely negligible.
Metrologist: Can we talk about that for a minute?
The metrologist wins this one hands down.
I wish I understood more of this but it's so interesting to see such high precision engineering
I dont unddrstand about 98% what you talking about but I could watch you solder and repair stuff every day all day long
@9:51 - RE silicone heating mats - back when I was an electrician, we used a series of Greenly silicone heating mats to soften and bend plastic conduit for service installation. Mid 90's probably.
Nowadays I enjoy to watch such content for 30 minutes much more than any TV series... :-)
Reps Precision Group !!!
maybe RPG-1000 its great product name
I understood a few words in this video. I still found it entertaining. You sir have some kind of magic
5 mins in and this reminds me of talking to my mate about engineering stuff...i get lots of it but eventually it goes over my head. I need more practice and cool machines to test on
Yes, the 3458A self cal would be an interesting topic for a video! I also noticed these (very small) jumps and it would be interesting to learn more about them :)
I love the aesthetics of those old resistors, they remind me of the ones in my old guitar amps.
They're just retro and funky and cool.
Thank you for my daily dose of German humour and test instrument repair and rework.. Always good
I come for the information but stay for the humor and editing. Top tier stuff.
Thanks for explaining leakage current across "isolation" transformers.
I have no idea what's going on but I like watching you build stuff
He's back
I would love to see a video about your data collection setup and work flow. Very interested in grafana, and would enjoy seeing how you capture and curate all your data points.
Super interesting, both the old Fluke and your DIY implementation. Love videos like this!
Way over my head of electronics but love watching your work
"ship to my friends all over Europe"
That one Indian guy: 😢
And the 45 degree oven temperature.
I actually took the time today to put a Like on every one of your videos, because they are WORTH IT. You put out very very decent videos filled with entertainment and factual, professional work that is both interesting and accurate. Good on ya, mate. Here's a few ppm's for your effort. . . . . . . . . . . .
i dont understand and keep up with the things you mentioned (around 15% understood) but loving to watch till the end. soo dense and informative! and also fun! thanks for your great videos
I literally love that kind of humour! 😆 Great job done and this videos are worth to be watched even after years! Keep on and BIG THANKS, Marco
The man, the legend, has returned!
Great. Such a niech subject but so well thought through and executed and video produced perfectly. Thank you, well done.
I work at an spectroemter company. We actually use these red heating stripes to heat our optics :)
Sometime in the 1960's (I believe) Philips published a design brief about an ovenized reference voltage source that was built around two zener diodes. Or actually one avalance type (positive tempco) and one zener type (negative tempco). Additionally there were several resistors. In short their idea was based on utilizing an avalance type (higher voltage) diode as the pre-regulator and the lower voltage (zener) as the output stage. Besides selected nominal voltages, they trimmed the resistors to provide an optimal current and thereby a good compesation. I myself remember building a 10 V reference from a 1N825 temperature compensated zener that to my understanding consisted of one zener and two silicon diodes in in series inside an ordinary (DO-35?) package plus my added op-amp. I also at first made a mistake that prevented a start-up. Needed an additional bias resistor for correcting that.
Wrapping that mu metal can with the heater was so satisfying, goodness.
You could order a charging module for lithium ion batteries with integrated buck-boost-converter for your voltage reference from banggood or ebay. They are not really expensive and you would eliminate the voltage drop when the batteries got discharged. Some modules even include a lcd screen with measurement of voltage and amperage and the ability to set these values with direct visual feedback. Even the transfered energy while charging can be monitored.
Let me know, if this "wink" in another direction has solved the ppm-drift of your device in the end.
By the way, it does not matter what your videos are about. Regardless of them being about cnc, 3d-printing, electronics or harvesting fresh condensators with your dog; they all satisfy my initial expectation when viewing a new video from you. The sound of your voice and the very distinct presentation of the various topics is very relaxing and inspireing to me. Maybe you could update your viewers on the progress with your cnc machine since you build the machine. What are you fabricating the most and what else do you use it for?
Greetings from Rhineland Palatine in Germany by some guy who is building a 3-D Printer you would have build nearly exactly in the same way.
The Saddam under your DIY reference had me dying
Thumbs up before I watch, but Marco please post more often. Quantity over quality. Everything you do is interesting.
You know I'm a mechanical engineer so most of this just goes over my head, but it's just so cool to look at. Also, where else will I get my German humor fix?
TPAI (The postapocalyptic inventor) has his moments too...
Great to see you posting again.
Witty, funny and informative as usual.
Just an amazing video!!!! I can’t wait to make my own hermetic reference. Thank you so much Marco.
I love high engineering detail video like this. It's good for my engineering mind.
Marco I hope you are right, with all the floods going on. Keep safe
I must drop everything to watch this latest PPM hunt!
6:28 on the 895a and 887a Fluke the pre regulation voltage is adjusted to 18.0 +/ - 0.1 Volts via a trimmer resistor.. they also say to measure the peak to peak AC ripple on the 18 volt DC. Spec is be less than 200 uV. The 895A differential voltmeter manual is from 1966..
Speaking of low-capacitance galvanic isolation (like the batteries you propose) - how much power does the circuitry consume, on average? I may have a very nice work-around for
at the moment I am trying to lower the power consumption as much as possible to reduce self heating.
@@reps A bit of both. Blue LEDs ~420nm act as excellent photo-collectors provided they are excited by wavelength matched violet LEDs or lasers (405nm). It is possible to get a photonic efficiency of up to 40% (!) and end-to-end efficiency (including the photonic efficiency of the LED of ~ 10%. In other words, you have a violet (visible, safe) "light source" consuming 10W of electrical input at one end and a Blue LED array outputting (ideally) 1W of electrical power (and unfortunately 1.5W of radiation-heat, ideally) at the far-end. www.researchgate.net/publication/273416580_All-optical_power_and_data_transfer_in_catheters_using_an_efficient_LED
@@AdityaMehendale Wow, fantastic info! Thank you for sharing. I vaguely remember seeing 20% being possible with optimal LEDs and modern solar panel (this might just be a theoretical value, not sure if anybody tried) but your method would be a lot cheaper and more compact. Love it!
@@repsA few nice things about the wavelengths:
- The "royal blue" LEDs have an MPPT-voltage ~3V that is enough to power most MCUs without needing a dc/dc converter
- As the photonic efficiency is 40%, you "only" need to dump 60% of the power as heat at the receiving end (so 1.5W/W instead of 4W/W as in a solar panel)
- Not only can the violet power transmitter be modulated to send data forward, but also the blue "receiver" can be load-modulated to send data backwards (as demo'd in the video); the paper reports a few100kbps to be possible in the backwards direction without separate optics
- veri smol (1mmx1mm) Tx and Rx for ~ 100mW (excluding space needed for collimators/fibers/etc)
- 395-405nm violet lasers (no collimators needed!) are cheap and easy to find from blu-ray stuff
- 430-450nm blue InGaN LEDs are commonly used in remote-phosphor lamps
- Photo electro luminescence is frickin' cool (more info on this in the paper)
It basically scratches every itch I had with galvanic isolation for oscilloscope-probes, bio-measurements, high-side gate-drivers, HV-stuff, contactless stuff, and more... Only 'issue' is the required line-of-sight (or fiber).
Missed your latest videos. No notifications from RUclips GRRRRRRR. Thank you. Be well.
Using ceramic insulation would give you more stable temps because of the low thermal transfer. You can use brazing to hermetically seal those feet and it will draw solder in. Just use plenty of solder paste around the side of the feet and stick in the hole. Heat the housing and paste and as it cools it will draw in the solder as it hardens.
I would only trust High end lead acids for up to 3 years max, in any mission critical devices. 5 Years if it is not important. I used to see them Dead just after 2 years as a fire alarm inspector. Even the best brands had battery's die after 3 years. I am surprised you do not have a high end lead acid battery tester. BTW love the videos.
Please more Fluke gear, I love it!!!
same tbh
You speak such amazing English for a German. I just like listening to your voice sometimes.
18.6 volts is the industry standard voltage for chargers for 16 Volt lead-acid batteries.
BTW, I've had the tour of the NIST lab that designed and built the Josephson Junction Voltage standards. (Also Time and Frequency and the F1 fountain clock.) For a tech guy into high precision it was like taking a trip to Mt. Olympus. Just damn. I was pleased with my Fluke 5.5 digit bench meter and my WWVB disciplined Xtal standard until that day. But I can never be happy again.
i don’t understand anything that he says but i still watch them
LMAO! That foam to cake transition had me!!
Some DIY precision resistance really sound fun; or just build a thin-film-coating-and-laser-trimming setup :D
Temperture controlled wirewounds?
6:28 those common Hakko CHP-170 cutters are just rebrands of Piergiacomi ones. Here in the UK the originals are significantly cheaper than the Hakko rebrands. Plus the originals have yellow handles instead, which looks much better.
I remember getting a pair only to find out it didn't even last as long as a Harbor Freight special! Definitely a fake...
@@NiHaoMike64 what do you mean fake? Piergiacomi are the actual manufacturers... They just make a red version for Hakko. Hakko do not manufacture them.
@@lost4468yt A counterfeit product that claims to be that brand but really isn't. A lot of the time, such fakes are far lower in quality than the real thing.
@@NiHaoMike64 oh I thought you were saying that Piergiacomi aren't legitimate, when they absolutely are.
Also what happened to them? I don't think there are counterfeit ones out there, as the product is not expensive and has a rather unique production, I would doubt there are any counterfeits of them. Maybe you just had a bad pair? Also I assume you know that you can't cut stronger metals or thick things with them? They (and the Hakko version, and just this type of cutter in general) will easily get damaged from doing that.
@@lost4468yt As I recall, they dulled very quickly cutting some pieces of CAT3 cable. I then found that it took next to no effort to sharpen them again with a file but they wouldn't stay sharp for long, indicating the tips were not properly hardened.
Your comment are great. Simple glorious . It has been a very long time since I have LOL this much BRAVO.
I really want to see him repairing a toaster !
Pretty sure he could 3D print a "toast Hawaii" after the repair ... ^^
I absolutely love this.
Ah yes. Electronics and the finest mimis. Thats gonna be good.
Thank you so much for yet an entertaining and informative video. I love your strive for excellence.
No f-ing clue what you are doing, but I'm glad you are having fun.
At least I think so...
Holy reflection, what ... , ahm let me ...., I mean ...., yeah was quite a bit of Information. There might be some extended heat in my sealed enclosure too, the one up top the shoulders. To cool down I gonna repair my newly aquired Stelltrenntrafo from anno dunnemals (some long time in the past), enjoying % with doubledigits.
Echt Klasse was du da jedes Mal raushaust.
Had to watch it five times just to get half the laughs by half... Thank you.
What we should do next? Send one to the museum of everything else and see Sam bend it so its fluctuations in ppm will be used to voltage control an obnoxious drone or GameBoy Mega Machine... Using a flexible PCB just begs for a circuit bend.
What do you think about using aluminium PCBs to keep temperatures homogenous? (I just saw jlcpcb are doing them). Using flex PCBs to reduce stress is ingenious, is this something measured/studied? Stress distributions in flexible inhomogeneous composite materials is not straightforward, at least with FR4 you know it's going to dominate the behaviour, but with flex PCBs the traces are as stiff as the support (I guess), so you could get something weird or unexpectedly high stress
yes, that JLC price is incredible, I hope it lasts a little longer so that I can come up with some cool project for it ...
the whole PCB thermal expansion vs. precision resistor story is a bit pseudo-sciency admittedly. there is a vishay paper stating that only thick film resistors are affected and that solder joints are the worst offenders. but I liked the idea too much to listen to these reasonable sources :)
I'm sure this guy is reptiloid from Alpha-Centauri. His tech skills are beyond this planet.
I just love this channel so much!
Epic video, well worth the wait!
3:12 you just earned my subscription lol. love to see some safe and legal thrills
That's so pleasant for electronic engineers.
Pilgrimage and on-site camping...love it!
I particularly liked the part where you mentioned ppms.... 🙂
And its always nice to de-stress after a particularly challenging project by playing with some playdough...
The "re-cycling" watersplash & mention of eels was nice.... I'm assuming they were electric eels ? 🤔
From the Emerald Isle
😎👍☘️🍺
This video is a surprise, to be sure, but a welcome one :D
No idea why I watch this as I have no idea how any of it works even though I want to... But can't stop watching lol
Somehow I always watch these as soon as they come out but don’t understand a single word he says
Holee carp, those flexible PCBs are awesome, with some effort one can design their own frickin smartphone wtf
Man, my seance of humor is no laughing matter as well. Good on you. Cheers from Utah!
Hope you and your family are doing okay with all of the flooding.