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Linking Lower Voltage and Higher Voltage systems?

  1. Aug 15, 2013 #1
    Linking "Lower" Voltage and "Higher" Voltage systems?

    I'm an undergraduate in EE (entering sophomore level) and I have been wondering about how a low voltage control system is connected to a relatively higher-in-voltage system. (An example would be how a thermostat turns off and on a heater or air conditioner) I'm just wondering about the actual physical implementation, like what kinds of circuits are used to connect these two areas of one system.
     
  2. jcsd
  3. Aug 15, 2013 #2

    russ_watters

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    Staff: Mentor

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