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Re: [AVR-Chat] very faint piezo buzzer

2005-05-26 by Peter Gargano

Ralph Hilton wrote:
>>>Connect it between 2 output pins and switch them alternately. That effectively
>>>doubles the voltage.
>>
>>How does that work?
> 
> If the 2 pins are alternately pulled up then the peak to peak voltage is 10.

Not unless you "store" the voltage somehow. ie. you may need some 
diodes and capacitors. At any one time the voltage measured across the 
two pins is always no more than Vcc.

Do you do advertisements for amplifiers?















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