I need to detect a 12V pulse on a 18M2.
I used a voltage divider 10k/4k7 to ground to bring the pulse down below the 5V supply voltage, but connecting to the input (B.2 declared as input) drags the centre down to ground.
Can anybody tell me the problem, or suggest a better way?
I used a voltage divider 10k/4k7 to ground to bring the pulse down below the 5V supply voltage, but connecting to the input (B.2 declared as input) drags the centre down to ground.
Can anybody tell me the problem, or suggest a better way?