> I need a linear displacement generator with displacements of in the order
of 0.2-1mm or so at frequencies of
> up to ~1KHz or more if possible. I'm hoping to input a sine wave of
varying amplitude and frequency and have
> linear motion (vibration) of the unit in response to the input signal. I'=
d

More information would help
eg mass to be moved is highly relevant.
If it's only always a sine wave then some cheating may be possible.
If the sine wave is stable in amplitude and frequency throughout a 'test'
and if it is allowed to ramp up or settle to this state it may all help.

I BOTE guesstimate that for a non-cheating pure voice coil driver based
system you'd need around 2 watts delivered energy per gram of load
(E&OE/YMMV/calculate it yourself to check). Assuming I've not dropped a
power of 10 or few along the way, well inside existing speaker driver
capability for loads in the few grams range.


    Russell
--=20
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