Re: vibrating capacitor Electrometer design (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 12 Jul 2004 11:05:37 +0100
From: Mike Harrison <mike@xxxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: vibrating capacitor Electrometer design (fwd)

Here's some info on the 'Vibron' - a vibrating capacitor for electrometers
http://www.electricstuff.co.uk/vibron.html



On Sun, 11 Jul 2004 22:37:57 -0600 (MDT), you wrote:

>Original poster: Steven Roys <sroys@xxxxxxxx>
>
>
>
>---------- Forwarded message ----------
>Date: Sat, 10 Jul 2004 20:57:15
>From: David Dameron <ddameron@xxxxxxxxxxxxx>
>To: High Voltage list <hvlist@xxxxxxxxxx>
>Subject: Re: vibrating capacitor Electrometer design
>
>Hi Ed,
>If you bought the Amateur Scientist CD set, please look at the Oct. 1965
>issue. Here a capacitor was made with a vibrating plate, so any charge is
>converted to an AC voltage, by q = CV, where C varies with time.
>
>Am bot sure how the charge can be separated from the drive signal with a
>varicap.
>-Dave D.
>
>At 08:10 PM 7/10/04 -0600, you wrote:
>
>>	I haven't looked at those links yet (will do, of course), but before I
>>do I have a couple of questions someone here may be able to answer.
>>
>>1.  How about vibrating reed electrometers?  Anybody know anything about
>>them.  Seems to me a very easy and cheap vibrating "reed" could be made
>>with a small loudspeaker.
>>
>>2. Has anyone looked into using varicaps or the like?
>>
>



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