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Last Updated on: Thursday, June 25, 2015 06:22 AM

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More  Beeper Circuits

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. 
This device functions like a lobby desk service request bell.  A short beep is sounded whenever the large pushbutton on top of the device is pressed.  Once pressed, the device will not make another beep until at least 2 minutes of time has elapsed. This prevents impatient customers from ringing the bell over and over.  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 Drawing Below to view PDF version of Schematic

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


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