walid Posted April 5, 2012 Report Share Posted April 5, 2012 http://www.sentex.ca/~mec1995/circ/at121.html Quote Link to comment Share on other sites More sharing options...
Hero999 Posted April 5, 2012 Report Share Posted April 5, 2012 That circuit is wrong, the transistor is configured as an emitter follower with no gain so there'll be no oscillation. Here's a link to the correct version, with a better explanation:http://users.silenceisdefeat.net/~lgtngstk/Sites/Circuits/Buzzer/Buzzer.htmlIt can be made louder by replacing the collector resistor with an inductor:http://homemadecircuitsandschematics.blogspot.co.uk/2011/12/how-to-make-simple-piezo-buzzer-circuit.html Quote Link to comment Share on other sites More sharing options...
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