Re: Making piezo louder



blender@xxxxxxxxx wrote:

as I have read on news groupe that the inductor couses some pics which
makes voltage over piezo higher (if you look into some old whatch with
buzzer it is there)

Only in a resonant circuit. Which you don't have. In fact it may be louder
without the inductor. If you want a resonant circuit you'll have to do rather
more than just add an inductor. A capacitor is needed too and you'll need to do
some sums about their values.

avr output gives me 20mA,

In that case I doubt you need a transistor.

and the trick which you have describe do not work at all

Then you've done it wrong.

Graham

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Relevant Pages

  • Re: Whats this inductor doin?
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  • Re: Whats this inductor doin?
    ... Rich Grise wrote: ... >>For an LC resonant circuit, the Q of the inductor will affect the 'Q' of ... higher Q => narrower passband. ...
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