Re: Field Mills (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 12 Jul 2004 14:23:56 +0930
From: Matthew Smith <matt@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Field Mills (fwd)

Antonio Carlos M. de Queiroz wrote:
> Indeed, one of these field mills fried the serial port of the
> controlling computer when I tried to observe the field generated by a
> large electrostatic machine in front of it. Or possibly it was not
> even powered, but just there connected to the computer, serving as
> a capacitive antenna, while the machine was producing long sparks
> one meter away.

Maybe we should consider a fibre link as an alternative to the optocoupler.
We've only got a few millimetres of isolation on a DIP package - a couple of
metres of optical fibre would be _much_ safer.

Cheers

M

-- 
Matthew Smith
Kadina Business Consultancy
South Australia