It's a two-terminal device; I am driving it with a 1500 Hz square wave.

Mark


Michael Rigby-Jones wrote:
>   
>> -----Original Message-----
>> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
>>     
> Behalf
>   
>> Of Mark E. Skeels
>> Sent: 23 February 2010 16:38
>> To: Microcontroller discussion list - Public.
>> Subject: [EE] piezo transducer failure mode on overvoltage.
>>
>> List,
>>
>> I have an application using a audio piezo-transducer and it is rated
>>     
> at
>   
>> 5V; we want to run it at 9V; because it is louder.
>>
>> I am wondering what the failure mode would be for a device like this.
>>     
>
> Is this a bare Piezo element, or a complete buzzer including the driver
> circuit?  i.e. do you just supply a DC voltage to make it buzz or do you
> drive it with an AC waveform?
>
> Mike
>
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