Re: Electrometer design? (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 07 Jul 2004 08:33:55 +0930
From: Matthew Smith <matt@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Electrometer design? (fwd)

Malcolm Watts wrote:

> I thought about removing wedges of copper from ordinary Cu-fibreglass
> laminate to make the disks (which leaves the disks in one piece).
> Anyone see anything wrong with that plan?

As in etching off the copper? I'd thought of that.  Producing the discs
photographically would simplify the construction, just requiring some accuracy
with a hole cutter.  Mechanically, the discs would be a lot stronger and easier
to balance.  I'd have thought that this should certainly be good for the
stationary element.

I do wonder, however, whether making the rotary element like this would block
the charge travelling towards (or away from?) the stationary.

Cheers

M

-- 
Matthew Smith
Kadina Business Consultancy
South Australia