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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 ? |
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