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Questions tagged [circuits]

Use for questions primarily about circuit design, components, testing or other practical applications.

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3 answers
323 views

Is battery-charge-stop-at-XX-percent circuitry not cheap? [closed]

I'm curious why IBM/Lenovo ThinkPad line is basically the only manufacturer/brand of mobility devices that includes circuitry and software that allows one to vastly prolong battery life of laptops ...
cnst's user avatar
  • 155
3 votes
1 answer
297 views

What does this Logic Circuit do?

So I have to analyze this circuit, with inputs C0, A0, B0, A1, B1, A2 and B2, and outputs S0, S1, S2 and C3. It's been suggested I don't use a truth table to figure it out. I need to find out what the ...
kb2712's user avatar
  • 31
3 votes
1 answer
2k views

SolidWorks circuit simulation?

I use Labcenter Proteus Circuit simulation - you create circuit design, then apply current and see simulation in action - for example leds are blinking, or motor is rotating. If there is ...
sandric's user avatar
  • 131
0 votes
4 answers
4k views

Is there current multiplier circuit?

Is there an electric circuit that can multiply the input current? if yes, what is that called, and how to make it? My input is DC from a small DC motor which I use as a generator. My input current is ...
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5 votes
3 answers
136 views

Help with closed loop heat controller (for a non engineer)

I am interested in setting up a controller which can modulate the output of 2 hotpads based on input from an infrared thermometer. The hotpads have their own dials, but I am considering controlling ...
Ryan's user avatar
  • 151
8 votes
2 answers
828 views

What does a Sad Face on a circuit board mean?

I have a Fisher and Paykel Washing Machine (model number WL80T65C, well past warranty) which got rained on (a lot) and one of the capacitors blew up. I've done an amateur replacement of the capacitor ...
Dave's user avatar
  • 191
2 votes
2 answers
1k views

What is the purpose of the capacitors on LDO Regulator Circuit?

What is the purpose and benefit of the two capacitors on both the input and output pins of a LDO Regulator?
706Astor's user avatar
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