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Topic: Transistor Based Siren. (Read 567 times) previous topic - next topic

cjdelphi




That circuit would make perfect sense to me if you swapped the speaker for an LED or some other light source, is this circuit even oscillating to make
the speaker "whale" ?


tobyb121

It is probably supposed to be a piezo buzzer, they will beep with just DC applied

Grumpy_Mike


It is probably supposed to be a piezo buzzer, they will beep with just DC applied

In which case why have the transistors at all.

The capacitor is providing feedback and making an oscillator.

fungus


That circuit would make perfect sense to me if you swapped the speaker for an LED or some other light source, is this circuit even oscillating to make
the speaker "whale" ?


You probably needy a bigger battery to producing large marine mammals from a speaker...

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

cjdelphi

"whaling siren circuit"

almost tempted to build one...

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