Electronics What does it mean!!!

hey Friends ,

i got a telephone circuit from the net but it has a component which i don't understand what is it .

here's the photo for the circuit Diagram so if you please tell me what the "Piezo cermic Element" mean ...


http://electronicsworld.tripod.com/telephonesimages/15.gif


thanks

 

The "piezo cerAmic element" is a small speaker, like the "internal speaker" on most modems...

 

It is most likely a piezo speaker for the telephone ring tone.

 

so if i bought any type of it , so there's no differance !! .... or will it effect the circuit

 

You want one that doesn't say it works on a DC supply. Just the transducer with no built-in oscillator, like the top two groups here.

The ones in a plastic holder are easier to fit, the bare ones can be got from some musical birthday cards and novelties.

And please don't hot-link to somebody else's bandwidth, changing to link.

 

Thanks too much