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Door Bell Circuits
Designed by David A. Johnson, P.E.

Last Updated on: Tuesday, October 13, 2009 01:26 PM
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  • Basement Doorbell Beeper
    If you can't hear your doorbell when you are in your basement try this circuit. This circuit takes advantage of the 24vac power source located near the furnace. Using a simple current transformer technique, the circuit sounds a beeper whenever the main door chime is activated.

 
  • Basement Doorbell
    This circuit will activate a beeper in the basement, whenever the front doorbell is pressed.


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