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Re: Water rheostat?
From: Ashley, Marcus[SMTP:Marcus.Ashley-at-actew-dot-com.au]
Sent: Friday, September 05, 1997 12:13 AM
To: 'Tesla List'
Subject: RE: Water rheostat?
I am not sure about high voltages but this sounds exactly like what I am
using to control the speed of my muffin fan to quench my spak gap. It
works really well with 12 volts. It is just two nails in a pot of
saturated salt water with one nail stationary and the other moves up and
down.
Allways listen to experts, they'll tell you what can't be done and why.
Then do it.
Marc Ashley
>----------
>From: Tesla List[SMTP:tesla-at-pupman-dot-com]
>Sent: Friday, 05 September, 1997 1:30PM
>To: 'Tesla List'
>Subject: Re: Water rheostat?
>
>
>From: Felix[SMTP:73374.1547-at-compuserve-dot-com]
>Sent: Thursday, September 04, 1997 7:49 PM
>To: BlindCopyReceiver:;;;-at-compuserve-dot-com;
>Subject: Water rheostat?
>
>I'm advised to buy a variac to smooth out my switch-on transients. But
>why not an electrolyte rheostat which is $100 or so cheaper? I
>visualize a PVC pot of salt water containing basically two wires, one
>with a well-insulated handle. Such rheostats were used for various
>purposes in Tesla's day. Even a small volume of water could absorb
>the waste heat of a brief startup.
>Can anyone tell my why this wouldn't be a good alternative?
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