Telephone ringer circuit using 555 IC is a simple circuit or device which produces an alerting sound whenever a call is placed to your telephone number. The Telephone project posted here is the a telephone ringer which produces pleasant tunes when a call is placed to your number. The tunes produced by “telephone ringer” here are more melodious and soothing compare to those of old telephone instrument and piezo buzzer in the current electronic telephone instruments. PARTS LIST OF TELEPHONE RINGER CIRCUIT USING 555 IC Resistors (all ¼-watt, ± 5%…
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