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The most recent discussions

Virtual PID Controller Would Optimize Shutdowns In Pandemics, Reduce Kornsp...

July 14, 2020, 2:41 pm

Abbott didn't properly calculate lag time after lifting restrictions. https://www.businessinsider.com/how-texas-coronavirus-outbreak-got-out-of-control-2020-7 It's easy to overshoot as well. The P... Read more »

how to reduce the mains voltage

July 13, 2020, 3:31 pm

I have an older window air conditioner that I'd like to hang on to for a few more years. The name plate says it is 220 VAC and since the power company went through and upgraded the distribution ne... Read more »

Solder these 2 wires while being able to slip the shrink tubing over the so...

June 23, 2020, 11:04 pm

I would like to learn how to solder these 2 wires while being able to slip the shrink tubing over the soldered connection. Thanks. https://imgur.com/a/9z3z294 Read more »

Error of % + digits?

  [ 2 3 4 ]
June 18, 2020, 1:03 pm

I just bought an amp clamp meter, and it states the error is +/- 1.9% + 3 digits. What does the 3 digits part mean? Read more »

Turn on Dynamic Range Compression

June 14, 2020, 5:16 pm

I am trying to turn on Dynamic Range Compression or D.COMP as Denon calls it. I got up to and finished step 5. But instead of going to step 6, it went to step 8, Default Y/N. Step 6 is where you ca... Read more »

Subwoofer help

June 14, 2020, 11:24 am

I would like to add a sub-woofer to my home theater system. My system calls for speakers in the 6 -> 16 ohm range. When I searched Ebay, I found some speakers, but found out that they need a crosso... Read more »

Power in use indicator please ?

  [ 2 3 ]
June 6, 2020, 1:17 pm

I have a water pump in a remote location. Sometimes the pump (120 volts) li ne springs a leak and then runs all the time with the potential of burning out pump. I want to build a little circuit th... Read more »

Diagnosing speakers

June 4, 2020, 4:33 pm

I have a 6 speaker home theater system. However the middle 2 speakers have no sound. I checked the voltages. 0 volts when a movie is playing versus .22 Vdc when movie is not playing. Does that he... Read more »

Checking capacitors

May 28, 2020, 7:54 pm

Today I received one of the roughly $ 20 component testers. Checking it out and comparing capacitors I notices a big difference in a couple of them I was using a Fluke 87, a LCR meter from Ch... Read more »

Solar Charging Night Light not working

May 25, 2020, 8:50 pm

Hi all, I am trying to implement a very simple solar charged night garden light. Schematics is here: https://www.jameco.com/Jameco/workshop/JamecoFavorites/solarled.html Basically a solar panel ch... Read more »

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The best rated discussions


Where to buy a small wheel hub motor?

Specifically, where can I buy a high quality small wheel hub motor (with wheel) like the one used for powered Trikkes? http://www.trikke.com/hd_2/Refurbished-Trikkes/Tribred-E-Kit-Upgrade http://www... Read more »


Satellite radio - radio validation

I'm curious, can someone provide a simple several paragraph, basic explanation of how satellite radio authentication works? eg. If the radio is only a receiver and I cancel my subscription how does ... Read more »


Max Frequency of SM 118A counter?

  [ 2 3 ]

Anyone know the maximum frequency of a Heathkit SM-118A? I have been all over Google with little luck. One guy said it would go to 1 GHz maybe 2 GHz, I don't think so. ... Read more »


Software for PIC 16F876

Hello, I want to built a simple datalogger with a PIC 16F876, and found a nice schema on the net. My problem: te software (source) is written in C, but i need a hex files to program the PIC processor... Read more »


Soldering Copper to Phosphor Bronze

Does anyone know if soldering copper wire to Phosphor-Bronze make a solid and reliable electrical connection? Would it make much of a difference if the copper wire is stranded or solid? If there is a... Read more »


Best Light for reading?

When choosing a Flourescent Bulb for a Task Light what is the best for reading.......my choices are 2700 Kelvin, 3000, 3500, or 4100..... Read more »


Thought experiment-will this work?

I think I pretty much understand how induction motors work. A typical single phase motor has a start winding that is approximately in quadrature electrically to the run winding. This provides the p... Read more »


How do you test a capacitor?

  [ 2 ]

Just bought a generator and it failed within two hours of usage. Mfg. say maybe capacitor and will ship a new one. But am not sure. I have a voltmeter with capacitor readings. Know how to test for re... Read more »


Electronic parts sites

I am looking for sites that sell electronic components. I have Jameco, but they don't have a lot of components. Thanks, Andy Read more »


UCANDO videos

If anyone has any old ucando videos on the subject of AC or DC or power supplies or amplifiers or any basic stuff and you want to sell them, at a resonable used price, I'd be interested. I'm just ... Read more »