Chips in smoke detectors Answered
I have a bunch of smoke detector circuit boards all of which have IC chips. All of them have slightly to widely different numbers, some Motorola, a philips, etc.
The main question I have is what type of chips are these as far as function goes? I tried looking these up but so far nothing absolute.
Some numbers I remember are 8506, 8605, 8502; other numbers are way different and I don't remember what they are.