Re: Electric Fences (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 24 Oct 2003 23:51:05 -0400
From: David Speck <dave@xxxxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Electric Fences (fwd)


FWIW, I would suggest using one of the new solar powered fencers to
drive the fence.  You can mount it at the point of necessity, and avoid
the underground feed completely.

A big advantage of this setup is that it would absolve you of liability
issues should someone get shocked off a home brew fencer.  If you use a
commercial unit with a UL approval, any claimant would have to go after
the manufacturer, not you.  That alone would be more valuable than the
few bucks you would save by building something yourself.

Dave

>1) I need to feed power to an electric fence through an underground
>cable.
>
>2) I would like to measure the voltage on the fence at various points,
>to calculate losses and trace faults.  (I use a traditional Megger
>tester at the moment for fault-finding.)  Since the HV is coming in
>pulses, what is the best way to measure?  I was thinking along the lines
>of a divider network with the A to D convertor of an AVR microcontroller
>sampling at about 1kHz to catch the pulses. Any thoughts?
>
>[You could probably wire up a cap and resistor with a long enough time
>constant so you wouldn't have to worry about catching pulses.  SRR]
>
>Cheers M
>