[sdiy] Simple Oscillator +Doppler Effect

[raywilson at comcast.net]

Joel

The oscillator is not going to be as critical as the amplifier you need. I suggest that you use your student ID and see if a local music store will loan you (or worst case rent you) an amp. Several synth-DIYers have oscillator circuits you could use. Building a power amp is not a simple project.

Ray
> I'm looking for the simplest, smallest oscillator to opererate around 250 
> Hz, with a fairly large amplitude, for a physics project on the Doppler 
> Effect (if sound catches up to itself, it will make a sonic boom; AND as a 
> sound moves closer or farther away from you the frequency changes)... SO 2 
> questions ...
> 
> 1) Does anybody have a schematic for a cheap & easy (not alot of parts, and 
> NO COILS) LOUD oscillator?
> 
> 2) Do you think the weight of the oscillator+speaker can be supported by a 
> Balanced cable, OR should the oscillator & the speaker be separate?
> 
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