Is the signal from a basic Hall sensor pretty much a square wave? A mechanic friend told me that some automotive hall sensors encapsulate a Schmidt trigger inside the device which I'm sure would square it up. Not knowing if mine has such an internal circuit should the coil triggering still be reliable?
I'm not sure my terminology is correct, I think of high signal as being more nearly +12v in my case, when the Hall switch is open the signal is low? How do you know when the COP transistor switches, is it the arrow in the transistor's diagram which indicates which signal, high or low, that switches the transistor? I ask these questions because I'm a computer programmer, auto mechanic and handyman. Electronics has always fascinated me but I have no training in it. I certainly wouldn't mind another lifetime to try electrical and electronics.
Thanks,