I am trying to use a output signal to reset a counter, but the signal I have is "low when counting" and I need "low during reset".
I want to "invert" an open drain output to a new signal so that when the output is on (connected to ground), the "inverted" signal has voltage or is not connected and when the output is off (not connected) the signal is connected to ground. My source voltage is 12v in an automotive system.
I have been struggling with this for a while and I must be getting confused with the negative logic because each solution I have tried gives me the same signal. I would love to do this with resistors and one or more of these BJT transistors: 2N3904 2N3906 S8050 2N2907 S8550 2N2222 BC337 C1815 BC327 A1015 since that is what I have available already and would work best in the enclosure space I have.
Input: I have another piece of hardware (a digital counter model CUB5B000) with a user input that is internally pulled up to +12 V with 10 K resistance. The input is active when it is pulled low (<1 .0 V)
I usually just work in software, so I'm apparently rusty from my University electronics -- thank you!
Between the work I already did and the answer from @Elliot-Alderson, here is my current attempt at a solution: