I am somewhat new to hands-on electronics and am looking for some advice/ideas.
I am trying to figure out how to interface from a coil (on a pinball machine. high voltage:20-50v) to an input on a picaxe.
I'm assuming this would require a simple transistor switching circuit that would protect the picaxe input from the high voltage.
Questions:
(1) Is this an effective/safe approach to interfacing a coil with a picaxe input?
(2) If so, what type of transistor and other components could I use to accomplish this?
Thanks for any info that can point me in the right direction towards a solution.
I am trying to figure out how to interface from a coil (on a pinball machine. high voltage:20-50v) to an input on a picaxe.
I'm assuming this would require a simple transistor switching circuit that would protect the picaxe input from the high voltage.
Questions:
(1) Is this an effective/safe approach to interfacing a coil with a picaxe input?
(2) If so, what type of transistor and other components could I use to accomplish this?
Thanks for any info that can point me in the right direction towards a solution.