sound-energy converter

[donkey]

when i was growing up here in aus dicksmith was the electronics store with all the parts. they had a kit for kids that you could make about 200 kits out of. 1 of the kits i have been trying to track down a schematic for. it converted sound (through the speaker of course) to energy (well it made an analogue meter twinge a little). it was like a decibel meter but it used no batteries. if anyone can give me something similiar that would be awesome. as stated no power for this circuit.

 

[poor mystic]

Hard to believe you're serious, Phil.
If you try rectifying the signal from the speaker directly I don't think you'll have enough voltage, though you could try it. Use germanium or schottky diodes if you have any. Or, if you feed the output of the speaker through a step-up transformer you won't waste so much of the available voltage in the diodes. and you might be able to make a decent meter twinge, a little, with the current output.

 

[donkey]

don't get me wrong the needle moved very little and i remember yelling at it. its just something that i would like to test. i wanna see what principles it was based o too. i guess i'll continue my search. the worst part is dick smith no longer have that exact kit available. i might find one in a secondhand store or something one day and post it up to show you guys. if i got .0001 amps or volts from it i would be shocked, just something i could use to experiment with, maybe up the voltage lol.. i could maybe yell and get a whole volt if i wire it properly

after minimal searching i found what i think is the kit(looks very familiar) and the cost is $100 au so i might buy it to post the circuit to see if anyone would like to "refine" it with me

 

[poor mystic]

Gosh.



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