Well I would like to develop my own power supply from scratch and make it look run and work like it's top notch. I have some questions to ask before I tackle this. I plan on using it for a current project of mine such as the 4 bit computer, but since I want to save room on my breadboard I want to keep the power supply separate.
1. I have a step down transformer that takes 120 volts AC and drops it down to 25v 2A. Is there a way I can increase the amps to say 7 or 5 using inductors?
2. How would I go about making a sort of built in digital voltmeter using a few numeric LED displays and say a PIC micro controller?
3. I've seen some power supplies use large Inductors, I know they can be used at times to smooth current just like a capacitor with volts, but is that what they are mainly used for?
4. How would I go about making a short circuit protection to it?
5. Lets say I want a dual power supply that can be adjustable for negative volts, would everything still apply the same way if it was positive if I was reading the volts using a built in voltmeter?
6. When creating negative voltages, whats the best way on doing this then using a 555 timer? I dont want to overkill it by shooting 24 volts in it.
7. I know a potentiometer would be maybe ideal to set the voltage, but is there a better way? Maybe using PWM and a large cap?
8. I know things can get a little warm when dealing with a lot of parts that are working hard, is it ideal to install a fan for cooling? Especially since I'm developing a dual power supply?
I have a normal manufacture build one, but it only does 13 volts and it doesn't have many features when it comes to setting the volts or amps, and I'm not that lazy just to go out and buy one that has it all. I'm a very hands on type of person and likes to learn from trials and errors.
Thanks, Andrew.
1. I have a step down transformer that takes 120 volts AC and drops it down to 25v 2A. Is there a way I can increase the amps to say 7 or 5 using inductors?
2. How would I go about making a sort of built in digital voltmeter using a few numeric LED displays and say a PIC micro controller?
3. I've seen some power supplies use large Inductors, I know they can be used at times to smooth current just like a capacitor with volts, but is that what they are mainly used for?
4. How would I go about making a short circuit protection to it?
5. Lets say I want a dual power supply that can be adjustable for negative volts, would everything still apply the same way if it was positive if I was reading the volts using a built in voltmeter?
6. When creating negative voltages, whats the best way on doing this then using a 555 timer? I dont want to overkill it by shooting 24 volts in it.
7. I know a potentiometer would be maybe ideal to set the voltage, but is there a better way? Maybe using PWM and a large cap?
8. I know things can get a little warm when dealing with a lot of parts that are working hard, is it ideal to install a fan for cooling? Especially since I'm developing a dual power supply?
I have a normal manufacture build one, but it only does 13 volts and it doesn't have many features when it comes to setting the volts or amps, and I'm not that lazy just to go out and buy one that has it all. I'm a very hands on type of person and likes to learn from trials and errors.
Thanks, Andrew.
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