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From: francis@hydracs.ua.oz.au (Francis Vaughan)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: Making a clodk go at twice the normal speed.
Message-ID: <1351@sirius.ucs.adelaide.edu.au>
Date: 24 Aug 90 01:29:37 GMT
References: <1990Jun7.141107.6790@bnrgate.bnr.ca> <1990Aug23.173721.7942@arnor.uucp>
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Organization: Adelaide Univerity, Computer Science
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In article <1990Aug23.173721.7942@arnor.uucp>,
murthy@arnor.watson.ibm.com (Sesh Murthy) writes:
|> A friend of mine would like to change the speed up a clock by a factor
|> of 2.0 or 0.5 for a psychology experiment.  
|> 
|> I was wondering if there is any simple way to do this.
|> 

A nasty thought comes to mind. Clocks as a rule run on the proverbial
"smell of an oily rag" so this should work. Get a signal generator, a
small lab audio amplifier and a power transformer.
Run the transformer backwards from the amp which is fed with a nice
sine wave from the signal generator. Need a bit of care in setting up
to get the volts OK, but you also get infinitly variable time.
Use an oversized transformer, so you don't saturate it on low frequencies.

						Francis Vaughan.