A Simple Electronic Buzzer electronic
Friday, August 20, 2010 by sms
the circuit is very simple , it just uses a couple of resistors, a capacitor and the easily available 555 timer IC. The 555 is setup as an astable multivibrator operating at a frequency of about 1kHz that produces a shrill noise when switched on.
The frequency can be changed by varying the 10K resistor.
