I was struggling to purify an undervoltaged 3wire PC fan rpm signal (yellow wire). I tried several methods but under 600rpm, i always had problems. I tried 2n222 alone and darlington. I also tried some other transistors. And then, out of the sudden, i tried a transistor that just worked!
What i want to result is, what criteria are there to choose a transistor?
Is there a site and/or a book (that i would rather prefer) for transistor selection?
Thanks again
What i want to result is, what criteria are there to choose a transistor?
Is there a site and/or a book (that i would rather prefer) for transistor selection?
Thanks again