need very small disc that vibrates

Hi, My daughter is doing a research project for her masters in Athletic training and needs to locate a small disc sized object (about the size of a half dollar) that emits vibration at 15 - 44 Hz. Low power consumption, continious duty. Please e-mail me at: snipped-for-privacy@comcast.net Thanks, David

Reply to
David Seidel
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Use a piezo transducer.

Cheers!

Chip Shults My robotics, space and CGI web page -

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Reply to
Sir Charles W. Shults III

How about a pager? Sometimes, if you look long enough, you'll find one on the ground, take it apart and salvage the vibrating assembly. It's a tiny motor with an off-balance weight on the shaft. Power up the motor and there you go. Don't know how well they stand up under continuous duty though.

Reply to
ob723bg9

David Seidel wrote in news:KYYNa.52330$fG.35177@sccrnsc01:

Check out the Vibrating Pager Motor at the top of this page:

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Its the first thing that came to my mind.

Good Luck Brad

Reply to
Mazer

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