Questions tagged [control-circuit]
7 questions
8
votes
2 answers
Why do we compensate PWM controllers?
I have been studying switch mode power supplies for a while. I have understood the working principle of several common topologies But there is a detail in the control circuit structures which I still don't understand. We use the \$R_c\$ and \$C_c\$…
hkBattousai
- 13,913
- 31
- 114
- 190
4
votes
1 answer
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) minimum or none electronic components, except things I…
JJ_Jason
- 164
- 8
4
votes
2 answers
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 and multipurpose microcontroller) which requires…
hkBattousai
- 13,913
- 31
- 114
- 190
4
votes
1 answer
Transistor Choice for LED Control Circuit
I just completed an introductory course in digital design. During the course I designed a circuit for driving multi-color LED's with an automotive application (for a personal project). The following is what I made:
The circuit basically turns the…
Hebrew Hammer
- 41
- 4
0
votes
1 answer
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 light which is powered with normal switches. People…
adithyavr
- 11
0
votes
1 answer
voltage output and flip flop output
Shown below is the circuit I would like to implement. (the circuit is from this paper).
Basically, it's a circuit designed to cut off voltage when electrochemical etching is done. The sudden drop in current flow is taken as the signal to stop the…
Blackwidow
- 521
- 5
- 15
0
votes
1 answer
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 for say 90 seconds. The application is: I perform…
Alan Bowen
- 1
- 1