An old telephone magneto produces an admirable jolt for a single turn of 
the crank - if you can strand to go manual.

Alden

Gerhard Fiedler wrote:
> Alan B. Pearce wrote:
>
>   
>>> Design add-on cable that detects cat contact and tickles/jolts ( has
>>> setting ) the cat.  Must be real cheap, easy to build out of RSP (
>>> Radio Shack parts ) Open Source to cat lovers. Optional --->  squirt
>>> gun trigger
>>>       
>> I have thought of doing something similar using one of those Motorola
>> body sensor thingies that were mentioned here about 6 weeks ago ... 
>>
>> But they wouldn't supply me with a sample.
>>     
>
> I see why a cat sensor is necessary for the optional squirt gun trigger,
> but I must have lost the argument why it is necessary for the tickling
> wire. Traditional fences (and I'm not comparing cats with cows :) don't
> have that. Just make it tickle regularly, using an automotive ignition
> circuit, with an adjustment for the coil "loading" current and for the
> interrupt time.
>
> Gerhard
>
>   

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