At 11:55 PM 5/9/98 -0400, you wrote:
>Sean Breheny wrote:
>
>> ...After all, a 1Hz signal would not excite a piezo element very well
>> and it also wouldn't be very audible :) ...
>>
>
>Actually, switching a standard piezo disc (no built-in oscillator) on and
off at
>a 1 Hz rate is *very* audible. (However, the resulting clicks are well
into the
>human audible range).
>
>Ken Pergola
>

I stand corrected. I have never successfully used a plain piezo disc. I
didn't realize that it would have enough Q to resonate audibly with only
1Hz excitation.

Still, any ideas on why they are called "buzzers"?

Sean

+--------------------------------+
| Sean Breheny                   |
| Amateur Radio Callsign: KA3YXM |
| Electrical Engineering Student |
+--------------------------------+
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