I'm the guy with the truck! The kill switch only disabled the starter; installed in series with the momentary switch on the clutch pedal. Thus it behaved like it had a dead battery. It didn't occur to me that bump starting still would work, but it absolutely did. Evididently, they were trying to jump start it and even bought jumper cables; found the new packaging. They even swapped the battery and my old one was in the passenger foot well. They must have gotten spooked and ditched it in the middle of the street. It fired right up when my wife pressed the kill switch and drove it home. Yes, the teddy bears and toys, weird. Circuit has now been upgraded to a latching relay that cuts the ignition also.
You have more faith in Chinese components than me. I have built that kit, but connected as a voltmeter. I check every component before soldering. One of the capacitors was way off in value, with a very high ESR, so replaced it. Saves a lot of faultfinding. You never showed how to set it up with those 2 variable resistors. Probably the most important part for anyone building that kit. Many sellers on AliExpress, but only found one who covers the entire build and calibration. I wonder how many incompletely assembled kits there are out there, built by people who can't figure out how to get to all the soldering points. That zener/transistor arrangement going into pin 26 creates the negative voltage from the positive 5 volts input.
Operating voltage +5 volts and charge pump for -5 V and TL431. Nice. The internal reference can only be used when the power supply is floating and around 9 volts. An external reference can be created with the TL431 then +/- 5 volts supply is possible. The biggest shortcoming of the IC is that the negative measuring input cannot be connected to GND. But nevertheless the IC or variants were installed in many cheap multimeters. Today as chip on board with black blob on top.
coincidentally - was looking at an old copy of Elektor Electronics November 1989 yesterday - T. Wigmore article on voltmeter module using ICL 7107. Surface mount, I actually bought four of the PCBs (LOL we've come a long way in 33 years).
Cute little meter kit 😀 I'm sure you could rework the input resistors to make it a voltage meter. The intersil chip might drift slightly as it gets slightly warm while driving the leds. Intersil was bought by renasos, so they make them now.
it's a real skill. Anyone can make something badly. The hard part is making something the perfect amount of bad so that the end user is still able to fix it and then feel accomplished at outsmarting the stupid designers ;-)
The standard method of PCB assembly is to start with the shortest components and proceed to the taller ones. Also, work your way from the center of the board to the edges. This is intended to make access easier for each subsequent part. Obviously, consideration of complications such as components on two sides and sockets that should have been strips need to be planned for. If there had been instructions and they'd been in coherent English, you might have been able to follow them but usually, just a few minutes of contemplation prior to starting will reveal any pitfalls.
I have a linear lab power supply that I recently fixed that uses these chips for the meters, one problem however is that the least significant digit of the amp meter is constantly jumping, ir only becomes steady once I connect the output ground of the PSU to earth ground, any ideas of how to solve this, adding a bypass capacitor on the chip?
Hello, so whoever invented this must have had at least three titles, yes I know, you buy a voltmeter and you have an ammeter, I bought a frequency meter for monitoring 50Hz for my workshop and the voltmeter came for 12V DC 🤪 Nice day 🙂 Tom
Hello . thank you about sharing this video . please share a video about how we can find the voltage of SMD zener diode(MELF) while it is broken and without any circuit diagram.
Hi! Does anyone know where I can get the schematics to a Model W158 Ultrasonic cleaner that uses three 6GT5 tubes? I can not find the schematics easily on the web. Any help would be great!
I top solder thru-hole resistors and if you flow it right the solder will flow thru to the bottom, and you can click all of the leads off in one flip of the PCB.
Hello again, what vice do you use for soldering? I remember looking for one like that years ago but they felt a bit pricey back then, and I could not use that kind of money. And now I cannot remember the make and model.
Whether we realize or not, everyone at one point in their life will reach a fork in their road where they have to decide, should I take the straight road or the other path that leads to a life of crime?
@@chriswalford4161 I'd say that was a sub fork of crime but that'd give criminals a bad name ;-) I kid I kid, there are good politicians out there, you just have to vote for them. if your nation doesn't have preferential voting get on that first then you'll get better politicians. Any politician opposed to it is probably bad, those in favour are starting from a good place.
I'm the guy with the truck! The kill switch only disabled the starter; installed in series with the momentary switch on the clutch pedal. Thus it behaved like it had a dead battery. It didn't occur to me that bump starting still would work, but it absolutely did. Evididently, they were trying to jump start it and even bought jumper cables; found the new packaging. They even swapped the battery and my old one was in the passenger foot well. They must have gotten spooked and ditched it in the middle of the street. It fired right up when my wife pressed the kill switch and drove it home. Yes, the teddy bears and toys, weird. Circuit has now been upgraded to a latching relay that cuts the ignition also.
I enjoy the repair videos most followed by theory stuff via the chip of the day.
You have more faith in Chinese components than me. I have built that kit, but connected as a voltmeter. I check every component before soldering. One of the capacitors was way off in value, with a very high ESR, so replaced it. Saves a lot of faultfinding.
You never showed how to set it up with those 2 variable resistors. Probably the most important part for anyone building that kit. Many sellers on AliExpress, but only found one who covers the entire build and calibration. I wonder how many incompletely assembled kits there are out there, built by people who can't figure out how to get to all the soldering points.
That zener/transistor arrangement going into pin 26 creates the negative voltage from the positive 5 volts input.
Operating voltage +5 volts and charge pump for -5 V and TL431. Nice.
The internal reference can only be used when the power supply is floating and around 9 volts.
An external reference can be created with the TL431 then +/- 5 volts supply is possible.
The biggest shortcoming of the IC is that the negative measuring input cannot be connected to GND.
But nevertheless the IC or variants were installed in many cheap multimeters.
Today as chip on board with black blob on top.
Wired differently you get the measuring range of 0.200 V or 2.00 V or 20.0 V or 200 V DC
coincidentally - was looking at an old copy of Elektor Electronics November 1989 yesterday - T. Wigmore article on voltmeter module using ICL 7107. Surface mount, I actually bought four of the PCBs (LOL we've come a long way in 33 years).
Everytime i am embarrassed to tell my story to others, I paraphrase the story as if it happened with my friend..🤣
SWIM will have to agree.
@@gyrgrls q⅔3www
Cute little meter kit 😀
I'm sure you could rework the input resistors to make it a voltage meter.
The intersil chip might drift slightly as it gets slightly warm while driving the leds.
Intersil was bought by renasos, so they make them now.
I guess they way I'd start becoming a criminal is by selling badly designed boards/kits like this on fleabay 😄
it's a real skill. Anyone can make something badly. The hard part is making something the perfect amount of bad so that the end user is still able to fix it and then feel accomplished at outsmarting the stupid designers ;-)
Nice build... Whatever it turned out to be, luckily no hiss.
Given a 1 kHz or so on the base, that is a -5 V supply.
I'm shouting at the screen giant resistor R5 on the right of the socket!
The standard method of PCB assembly is to start with the shortest components and proceed to the taller ones. Also, work your way from the center of the board to the edges. This is intended to make access easier for each subsequent part. Obviously, consideration of complications such as components on two sides and sockets that should have been strips need to be planned for. If there had been instructions and they'd been in coherent English, you might have been able to follow them but usually, just a few minutes of contemplation prior to starting will reveal any pitfalls.
Bellissimo Canale molto interessante solo ora scoperto. Very very interesting. Ciao
Love these kits!
I have a linear lab power supply that I recently fixed that uses these chips for the meters, one problem however is that the least significant digit of the amp meter is constantly jumping, ir only becomes steady once I connect the output ground of the PSU to earth ground, any ideas of how to solve this, adding a bypass capacitor on the chip?
It looked like two solder pads were missing for the pins sticking up by J1 and that you did not solder them?
Display 1 does not have all its segments connected - only b,c,g and d.p. as when it is on it only shows 1. and -1.
Hello, so whoever invented this must have had at least three titles, yes I know, you buy a voltmeter and you have an ammeter, I bought a frequency meter for monitoring 50Hz for my workshop and the voltmeter came for 12V DC 🤪
Nice day 🙂 Tom
Hello . thank you about sharing this video . please share a video about how we can find the voltage of SMD zener diode(MELF) while it is broken and without any circuit diagram.
Nice!
Hi! Does anyone know where I can get the schematics to a Model W158 Ultrasonic cleaner that uses three 6GT5 tubes? I can not find the schematics easily on the web. Any help would be great!
I top solder thru-hole resistors and if you flow it right the solder will flow thru to the bottom, and you can click all of the leads off in one flip of the PCB.
Hello again, what vice do you use for soldering? I remember looking for one like that years ago but they felt a bit pricey back then, and I could not use that kind of money. And now I cannot remember the make and model.
panavise 366
@@IMSAIGuy thanks
Whether we realize or not, everyone at one point in their life will reach a fork in their road where they have to decide, should I take the straight road or the other path that leads to a life of crime?
There’s always the third way - politics. But the company can be questionable.
@@chriswalford4161 I'd say that was a sub fork of crime but that'd give criminals a bad name ;-)
I kid I kid, there are good politicians out there, you just have to vote for them. if your nation doesn't have preferential voting get on that first then you'll get better politicians. Any politician opposed to it is probably bad, those in favour are starting from a good place.
That's interesting, thanks, do you have a link to the kit?
I would like to order a vice like you use on your bench. Would you tell me the make or the supplier?
panavise 366
Nice, but way over priced. Great video. :)