http://electropart.info Electronics lesson: electronic parts, electronic components, electronic projects, circuit diagram and more Sat, 10 Jul 2010 09:16:15 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 http://electropart.info/schematic-diagrams/electronic-buzzer-circuit.html http://electropart.info/schematic-diagrams/electronic-buzzer-circuit.html#comments Tue, 29 Sep 2009 13:50:58 +0000 Electronics Online http://electropart.info/?p=187 This in a really simple electronic buzzer circuit based on timer IC NE555. The IC 555 act as astable multivibrator which will generate audio signal frequency. The frequency value is depended the value of 56K resistor and 10nF (0.01 uf) capacitor… you may replace the 56K resistor with a variable resistor to adjust the frequency.

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