need very small disc that vibrates

[David Seidel]

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:
d-seidel@comcast.net
Thanks, David

 

[Sir Charles W. Shults III]

Use a piezo transducer.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip

 

[ob723bg9]

David Seidel wrote:

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:
d-seidel@comcast.net
Thanks, David

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.

 

[Mazer]

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

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:
d-seidel@comcast.net
Thanks, David

Check out the Vibrating Pager Motor at the top of this page:
http://www.solarbotics.com/order/default.asp?PG=4&ACTION=CAT&CATID=8
Its the first thing that came to my mind.

Good Luck
Brad