I need a stepless variable output voltage regulator using LM317 regulator. I have a 2x15V trandsformer. To cool the regulator I need to run a 12 volt fan as well. So, I have to get 30vDC for the regulator and on the other hand, 15V DC for the fan as well from same transformer.
Anybody who has a simple schematic, please post.
Anybody who has a simple schematic, please post.