Thread: piezo buzzer
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Old July 23rd 12, 03:05 PM posted to rec.radio.amateur.homebrew
Allodoxaphobia[_2_] Allodoxaphobia[_2_] is offline
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Default piezo buzzer
On Mon, 23 Jul 2012 04:13:21 +0000, 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.

.... or pulsed DC.
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