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Is it possible to break a circuit electronically?

  1. Apr 24, 2009 #1
    I know you can use fueses, switches, and circuit breakers.
    But is it possible to use a logic circuit to break a circuit path?
     
  2. jcsd
  3. Apr 24, 2009 #2

    berkeman

    User Avatar

    Staff: Mentor

    Sure. Depends on what you mean by "break", though. You can use multiplexers (MUXes) to select which logic signal you want to route into another circuit, for example. You can use logic gates to enable or disable a signal continuing on. You can use a Tri-State output gate to enable or disable a signal from continuing on....
     
  4. Apr 24, 2009 #3
    Say I want to use a logic circuit to break the power supply of another electrical component.
     
  5. Apr 24, 2009 #4
    OK, I read a bit on Wikipedia
    Does anyone know if a demultiplexer can handle AC current?
     
  6. Apr 24, 2009 #5
    There are triacs specifically designed to handle AC voltages and currents. There are optocouplers that permit using floating (electrically isolated) logic signals to trigger the triacs.
     
  7. Apr 24, 2009 #6
    Thanks for the input I'll look at this when I get off work
     
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