Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I'm trying to reverse engineer a pcb and I'm stuck on this circuit. I believe the capacitors maybe for debounce. The switch is a reed switch. Can anyone shed any light on it?
You are correct it is a low pass filter for debouncing the reed switch. Reed switches dont just bounce they can vibrate for some time due to the physical configuration of the contact arms.
Required, but never shown