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There are 98768 individual articles here that are part of 9171 discussions
Please see below the list of the most recent and the best rated articles in Hobby Electronics Basics

The most recent discussions

Re: How do you recycle solar panels?

April 13, 2019, 4:49 pm

Yes, but we pretend that we don't know what China is doing with them. You don't know, do you? Read more »

Spurious triggering of 4013 flip-flop

  [ 2 3 ]
April 13, 2019, 2:15 pm

One of my garden lamp circuits is shown here: https://www.dropbox.com/s/10cc6lwfrsqjp68/DiningLamp-Post.jpg?raw=1 But the CMOS 4013 flip-flop circuit suffers from occasional spurious triggering. S... Read more »

cmos IC question

April 9, 2019, 11:32 am

I'm using some cmos IC gates in a project. All seem to have an internal protection network to insure that the inputs can't exceed supply or go more negative than ground with internal diodes. My q... Read more »

"Show Me the _Times_ Article That's A Square Wave. I Dare You. I Dou...

April 7, 2019, 8:39 pm

. . . . all our articles are sine waves. -- Shultzberger X (knowing full well the macro effect of partial truths) https://www.youtube.com/watch?v=k8FXF1KjzY0 Read more »

Switch mystery

April 5, 2019, 9:09 pm

As you can see in the picture, the switch is set to the off position. When I test the continuity, there is no beep. However, when I test the outgoing voltage, it is 18 Volts D.c. What gives? http... Read more »

Re: Sanity check on simple optocoupler use

April 2, 2019, 9:18 am

That looks fine. FOD817 has 50-150% current transfer ratio ( https://www.onsemi.com/PowerSolutions/product.do?id=FOD817 ) So, with 3mA in you can expect at-least 1.5mA out, with the output being ... Read more »

NiMH batteries

April 1, 2019, 5:37 pm

I bought some EBL aaa nimh batteries. Voltage is 1.3 v. Does that mean they are already fully charged? Andy Read more »

Really basic transistor question

March 24, 2019, 3:26 pm

I want to build a device that will take my phones off line. The phones are connected to a Vonage modem that (I'm sure) uses the POTS standard. Which is 50v DC at idle/on-hook and 90v (RMS) 20 Hz... Read more »

Switch for vaporizer

March 22, 2019, 3:28 pm

I use this switch for a hot vaporizer. I noticed the switch get pretty warm when vaporizer is running. It draws 5 amps, but the switch is rate at 3 amps. https://www.dropbox.com/s/0zjo80p67eqbeui/... Read more »

Retro Button Would Further Automation On the Boeing Max & Everything El...

  [ 2 ]
March 15, 2019, 9:48 pm

Put a retro or my kingdom for a horse switch on anything that seems unnecessarily over automated or when the additional sophistication is of a minor advantage. If anything doesn't seem perfect, tap ... Read more »

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The best rated discussions


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 »


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 »


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 »


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 »


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 »


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 »


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 »


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 »


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 »


will shortening a soldering iron heating rod cause a problem?

I need to shorten the end of my solder iron so i have more control of direction and make it more like a pen.....can i cut it down so my fingers are nearer the tip without causing a problem.....though... Read more »