Why not try a pulser circuit which pulses say 1 second of current into
a self oscillating relay every 5 seconds?

Hi voltage? I have a very nice circuit useing the lm3909,(you can also
use transistors:) ) that produces about 100 volts at VERY low amps,
and does indeed fell like a tickle.

On Fri, 31 Aug 2001 10:34:37 +0100, you wrote:

>Hi guys,
>    I've a weird one here that I've been racking by brain with. I need =
to
>generate a vibration that is detectable by a human as a small tickle -
>equivalent to a spider/insect crawling on your foot. My problem is that =
I've
>only got 3V to work with from a coin cell(or 2) i.e. zilch current!. =
Also it
>will be driven by a PIC running from the same battery so low power
>consumption is of utmost importance.
>
>I've been playing with piezo elements - I'm waiting on some housed =
elements
>to be delivered to see if the resonant soundbox helps.
>
>The proposed application area would prohibit the use of a cellphone
>vibrating battery so that is discounted.
>
>I just thought I'd throw this one out for comments.
>
>Best regards, John
>
>***************************************************************
>John.Walshe@inpactmicro.com
>
>INPACT MICROELECTRONICS (Irl) Ltd
>21A Pouladuff Road,
>Cork,
>Ireland,
>
>Tel: +353 21 4318296
>Fax: +353 21 4318980
>
>WWW.INPACTMICRO.COM
>***************************************************************

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