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Last Updated on:  06/19/2009 02:21:01 PM

Front Desk Service Beeper Circuit
designed by David Johnson, P.E.
Often a simple mechanical bell is used by a customer at a store or hotel lobby, which when activated alerts the personnel that service is requested.  The hobby circuit below performs the same function electronically.  It also contains a timer circuit, so the service beeper can only be activated once every 30 seconds or so.  This prevents some impatient person from ringing multiple times.

Click on Schematic below to view PDF version of this Circuit

Circuit Circuit Beeper Circuit Service Request designed by David A. Johnson, P.E. (June 30, 2006)
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