Hobby Electronics Basics

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Proper Storage of button cells ?

I have 500+ small button cells. I was wondering how can I store them so as to not drain them ? Do I have to store them i...
2 comments posted 22yrs
posted by dragonbreed
2 comments posted 22yrs posted by dragonbreed

Sensing the flow of current

Hello Everyone! I've ran into a situation where I need to sense a very large flow of current (100A) at 24VDC or so. Thi...
19 comments posted 22yrs
posted by i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4
19 comments posted 22yrs posted by i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4

shocker for squirrel

Need battery operated shocker for squirrels. Current should not to be at a level to injure them or other animals. Would...
3 comments posted 22yrs
posted by cience2000
3 comments posted 22yrs posted by cience2000

TLC272 and TS272

I have some TLC272s (TI) and TS272s (ST Micro). At first I thought they were just two manufacturer's name for basically...
0 comments posted 22yrs
posted by terran
0 comments posted 22yrs posted by terran

Need help with simple IR remote circuit

Can someone recommend a simple IR remote receiver circuit that can understand about 20 commands. I am looking for a sim...
1 comments posted 22yrs
posted by N
1 comments posted 22yrs posted by N

Convert 110v to 240v

Advise sought.... In the early 80's I was able to convert Apple computers (110v US imports) to run on UK mains by swapp...
7 comments posted 22yrs
posted by neilmarsh
7 comments posted 22yrs posted by neilmarsh

Help with a (simple - I think) circuit design

I think this circuit should be fairly simple, but I have no idea how to find the correct chip for this application. Her...
1 comments posted 22yrs
posted by zinfari
1 comments posted 22yrs posted by zinfari

Using a single resistor with several LEDs

When using an LED from a power source whose voltage is higher than the rating of the LED, a resistor is typically used....
19 comments posted 22yrs
posted by wylbur37nospam
19 comments posted 22yrs posted by wylbur37nospam

from breadboard to hard wired

Generous readers of this forum walked me through the building of a Pulse Width Modulator. This was earlier in the year...
10 comments posted 22yrs
posted by michaele
10 comments posted 22yrs posted by michaele

more of a electromechanical question

I am trying to get a small gas powered engine running, (Rockwell) and I need some help electrically. I have the unit ru...
2 comments posted 22yrs
posted by ksleep
2 comments posted 22yrs posted by ksleep

Why Are There No Right Angle Traces?

I was told the other day that there are no right angle traces on PCBs (the traces go to something like 45 degrees betwe...
32 comments posted 23yrs
posted by brandon(underscore)melland
32 comments posted 23yrs posted by brandon(underscore)melland
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