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Joule Thief Speaker Amp?
If a joule thief circuit can be used to amplify a battery to power an LED, could it possibly be used to amplify a speaker instead of a LM306? chip?
If a joule thief circuit can be used to amplify a battery to power an LED, could it possibly be used to amplify a speaker instead of a LM306? chip?
Comments
10 years ago
An amplifier is a different kind of circuit. You can use the transistor from a JT along with a few others and a few parts to make a simple amplifier. Here is a three transistor amplifier for driving a small speaker.
You can see many other interesting circuits at Bowden's Hobby Circuits. Have fun!
10 years ago
No. They work on different principles.
Answer 10 years ago
The Joule Thief is not an "amplifier" in any normal sense of the term. However, a Joule Thief might be used to power an amplifier.
Answer 10 years ago
. I suppose one could call a joule thief a voltage amplifier. Still not going to work since audio amps are power amplifiers (voltage and current are amplified, not just voltage).
Answer 10 years ago
I'd call it closer to a transformer. (It's essentially a DC-to-DC converter, right?). And I wouldn't normally call a transformer an amplifier. But your usage may differ; de gustibus...