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Easiest way to convert signal to sound

  1. use piezo awd, just connect it straight on
  2. use piexo as above, but connect its other lead to an inverted version of your signal
  3. use a 1 tr amp to feed a small speaker. Since its a square wave, all you need is the tr to switch on/off, linearity doesnt come into it.

NT

Reply to
meow2222
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Well, you can take the signal output and run it to a transistor, sure. Or hell, you have plenty of current in the loop- just put a few turns coil on a speaker and plant the coil strategically around the IGBTs!

Matter of fact, does the circuit "sing" much as-is? I've noticed singing MOSFETs, capacitors or coils (can't tell which, if not all!) when my induction heater starts oscillating in some conditions (gotta sort that out).

Tim

-- Deep Fryer: a very philosophical monk. Website:

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Reply to
Tim Williams

I have this assembly that makes square wave that is the output of a comparator chip. It then goes into the gate driver boards, IGBT etc, all of it works.

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What I want is to also direct this output into a little speaker, so that can "hear" the circuit running. I have a feeling that I need some "opamp" chip to do that. Anything cheap and easy to use that you could suggest? I would prefer it in 4-DIP package if possible for space reasons.

thanks

i
Reply to
Ignoramus14714

Something like that.

That would be only when there is current. Whereas I want it to sound when it is merely turned on. I would put a speaker away from the assembly, near the front panel/.

It does, but not exactly when I want it.

It's not loud enough.

i
Reply to
Ignoramus14714

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