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Topic: How to Switch a Circuit based on Whether Another Circuit is Open or Closed (Read 146 times) previous topic - next topic

Colin8128

Hello,

I need to switch a circuit based on whether another circuit (a millivolt circuit without meaningful voltage) is open or closed but I am not familiar with any component that can achieve this.  A multimeter has a continuity checker that can tell if the circuit is open or closed but how would I trigger a switch based on this?

Thanks!

Paul_KD7HB

Hello,

I need to switch a circuit based on whether another circuit (a millivolt circuit without meaningful voltage) is open or closed but I am not familiar with any component that can achieve this.  A multimeter has a continuity checker that can tell if the circuit is open or closed but how would I trigger a switch based on this?

Thanks!
A multimeter tests continuity by passing a current through a circuit(probe tips and the test materiel) and measuring the voltage across a series resistor. You can do the same.
Paul

Paul__B

Sorry, no actual details, no sensible answers!  :smiley-roll:

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