I am not super familiar with transistors, but need to use one in my project. I have a 555 generating pwm and need 800ma and 12v to respond to the PWM. I am not sure exactly what transisitor to use, but I stopped at radio shack and picked up a TIP42
https://www.electro-tech-online.com/custompdfs/2010/05/TI2FTIP42C.pdf
I am not sure if this was exactly right. I am pretty sure I need a PNP, right? This was the only one that had the power ratings for my needs.
BTW:
12v is not going to base, it is going to be less than 5v.
Thanks,
Mike
https://www.electro-tech-online.com/custompdfs/2010/05/TI2FTIP42C.pdf
I am not sure if this was exactly right. I am pretty sure I need a PNP, right? This was the only one that had the power ratings for my needs.
BTW:
12v is not going to base, it is going to be less than 5v.
Thanks,
Mike