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3
votes
1answer
235 views

LPT circuit switching

Is there a short tutorial describing simple, low voltage circuit switching using the LPT port? I know it could be done using USB or RS 232 relays, but I would like to assemble it with (buying) ...
0
votes
1answer
121 views

Program which turns power on/offf

I am a software developer and just started my journey in electronics side. I had this particular idea which I want to do for my project. Problem statement: In my college every room has fans and ...
0
votes
1answer
461 views

How do I make fading lights?

can someone help me or point me to a site or supplier. I would like three or four lights (each say 60W 120V) to fade in and out. The fade time should be about 15 seconds. The lights should be bright ...
3
votes
2answers
558 views

DC supply for control circuit of a DC-DC converter?

I have a switch mode DC-DC converter assignment which is supposed to convert 36-72V input DC voltage to 9V DC voltage. The circuit I'm working on contains a control circuit (implemented with a custom ...