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vu2nan · July 24th 12, 04:06 AM

Quote:

Originally Posted by

On Sunday, July 22, 2012 9:13:21 PM UTC-7, vu2nan wrote:
;793804 Wrote:
> what is postive and negative on a round buzzer where contacs are an
> inside center circle and an outside ring ?
>
> or does positive and negative matter with a piezo buzzer ?

I suppose you are referring to the piezo element alone. In that case the
answer is 'no polarity' as the element responds to an ac signal only.

--
vu2nan

there's an inverter inside my multimeter ? why are peizo buzzers listed in Radio Shack under DC voltages ?

Reference for Piezo Buzzer basics:

http://www.buzzer-speaker.com/manufa...o%20buzzer.htm

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