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A simple electronic buzzer

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A simple electronic buzzer Empty A simple electronic buzzer

Bài gửi  duyminh on Wed Mar 31, 2010 4:21 pm

A simple electronic buzzer Dms5minh

A simple electronic buzzer

This very simple circuit 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.

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