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Bell circuit with two 555 timers

2015-02-04 06:34  
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This circuit is also Crossed to:    Beeper - Buzzer ,  Doorbell Circuit , 555 Timer Circuit

This simple Bell circuit uses two 555 timers. The frequency is controlled by the capacitors that must be preserved almost identical in value to each other for best results. Fine tuning is done with R1 and R2.

Bell circuit with two 555 timers