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Allodoxaphobia[_2_] · July 23rd 12, 03:05 PM posted to rec.radio.amateur.homebrew

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.

vu2nan · July 23rd 12, 07:19 PM

Quote:

Originally Posted by Allodoxaphobia[_2_]

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.

Correct! Pulsed DC too!

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