Hello David,

I've been tempted to make one by taking something long and rigid like
aircraft honeycomb from Boeing surplus and
hinging it at one end and moving the other end; up and down with a
small stepper motor with and eccentric on the shaft at the other end.
then I could find the amplitude I wanted somewhere on the "rigid
board" and the frequency would be controlled by the motor.  A basic
stamp could do the job.

angel


Monday, February 11, 2002, 11:27:47 AM, you wrote:

DS> I am working on some feedback electronics to
DS> improve the low frequency response of geophones,
DS> and I need some way to test my systems.

DS> It looks like a need a "shake table" that can operate
DS> in the 0.1 to 10 Hz range.  Can anyone help me
DS> with a simple (cheap!) design?

DS> Thanks,

DS> Dave
DS> http://www.infiltec.com/seismo/
 

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-- 
Best regards,
 angel                            mailto:angel@............

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