- #1
XwyhyX
- 15
- 0
Hi, I have to build a very basic power supply, basically from a 220V AC Wall socket to a certain DC Voltage as the output. I plan on using a transformer, rectifier,capacitor and a voltage regulator. I can see that following this design it can only give out one value of voltage. I thought of inserting a potentiometer so that if the transformer gives out 24V AC i can adjust the output voltage with values from 0-24V which would run almost all DC devices.
My question is, can i just place the pot between the transformer and the rectifier? Or maybe its better if its placed after the regulator? Will there be a difference if the pot is placed in different places since all that is being done with the signal is conversion?
All I have is my tablet right now so here's a pretty rough sketch
I know it's very basic and all, i just wanted to clear things out as much as possible before i get to working on it
My question is, can i just place the pot between the transformer and the rectifier? Or maybe its better if its placed after the regulator? Will there be a difference if the pot is placed in different places since all that is being done with the signal is conversion?
All I have is my tablet right now so here's a pretty rough sketch
I know it's very basic and all, i just wanted to clear things out as much as possible before i get to working on it