This is my first post and I'm new to electronics.
I want to build a circuit to reduce excess speed/ noise on a (12v 0.08A) fan in my PC. It's a two wire setup I rigged to actively pull air into the PC case.
Then, with a separate circuit, I'd also like to be able to control the speed of my (12v 0.28A) CPU cooler. It's also way too fast and noisy for its heat sink which is virtually always cold. This CPU fan however uses three wires and gets its feed from the mobo CPU fan hook up.
I tested a 1k carbon potentiometer on the 0.08A (two-wire) fan, it worked fine, but started to get a little warm. I want it to be reliable and I'd like to take heat away from the carbon pot - the Tandy guy suggested a transitor. Any thoughts and (easy to understand) diagrams please.
Regards, cooee2
I want to build a circuit to reduce excess speed/ noise on a (12v 0.08A) fan in my PC. It's a two wire setup I rigged to actively pull air into the PC case.
Then, with a separate circuit, I'd also like to be able to control the speed of my (12v 0.28A) CPU cooler. It's also way too fast and noisy for its heat sink which is virtually always cold. This CPU fan however uses three wires and gets its feed from the mobo CPU fan hook up.
I tested a 1k carbon potentiometer on the 0.08A (two-wire) fan, it worked fine, but started to get a little warm. I want it to be reliable and I'd like to take heat away from the carbon pot - the Tandy guy suggested a transitor. Any thoughts and (easy to understand) diagrams please.
Regards, cooee2