Stupid Electronics Question

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Anonymous
Stupid Electronics Question 2016-04-04 18:18:35 Post No. 972693
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Stupid Electronics Question Anonymous 2016-04-04 18:18:35 Post No. 972693 [Report]

Can i snip the wires leading to a traditional speaker and attach them to a piezo speaker, or do I need to convert the signal somehow?

Sorry if this is babby-tier stuff, but I am a physist by trade, and rarely do practical DIY work.
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I plan to dismantle a bluetooth earphone, replace the speaker with a piezo, and then stick the whole thing in a pen. The sound it makes will be inaudible, unless you touch it to your teeth and cause the sound to be transmitted to your cochlear through your skull bones.

You could just be chewing on your pen and nobody would know you were listening to music or something. Like a secret-agent type deal - it should be awesome if it works!

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Anonymous 2016-04-04 18:40:27 Post No.972723
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Anonymous 2016-04-04 18:40:27 Post No.972723 [Report]

That picture makes me angry.

Also, it's not going to be silent.

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Anonymous 2016-04-04 18:44:46 Post No.972727
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Anonymous 2016-04-04 18:44:46 Post No.972727 [Report]

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>>972723

It will be if i minimise the current, cut the piezo into a strip to reduce its area, and place it inside a lump of epoxy

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Anonymous 2016-04-04 18:48:58 Post No.972731
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Anonymous 2016-04-04 18:48:58 Post No.972731 [Report]

>>972693
Yes, will work. Remember, low power, low current, or it will end up in smoke.

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Anonymous 2016-04-04 18:49:55 Post No.972734
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Anonymous 2016-04-04 18:49:55 Post No.972734 [Report]

>>972731

Perfect, thats exactly what i wanted to hear.

thanks man!

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Anonymous 2016-04-05 20:07:55 Post No.973277
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Anonymous 2016-04-05 20:07:55 Post No.973277 [Report]

A piezzo acts like an almost purely capacitive load. If your amp can take it without oscillating or spewing other random unforseen garbage, you're good to go.
Normaly, you should be able to attach it to any amplifier without even the need for a lowpass filter.
Beware much different types of piezzos exist with widely different specifications - most of which won't even cover the audible range.