Path: utzoo!attcan!uunet!zephyr.ens.tek.com!tektronix!nosun!qiclab!m2xenix!quagga!ucthpx!undeed!dwoodwar
From: dwoodwar@undeed.uucp (Duncan R Woodward)
Newsgroups: sci.electronics
Subject: HIGH INPUT IMPEDANCE VOLTMETER
Message-ID: <1990Oct25.080455.3910@undeed.uucp>
Date: 25 Oct 90 08:04:55 GMT
Reply-To: dwoodwar@undeed.uucp (Duncan R Woodward)
Organization: Univ. Natal, Durban, S. Africa
Lines: 15

hi Netters,

Does anybody out there know of a neat circuit for a voltmeter with an
input impedance of approximately 10 Giga ohms ? I am particularly
interested in the input stages. The meter must be able to measure
input voltages in the range 0 to 50v DC.

Thanks in advance for any information.

Duncan Woodward (Department of Electrical Engineering)
University of Natal
Durban 
South Africa
email: dwoodwar@Daisy.EE.UND.AC.ZA
internet: dwoodwar.UNDEED@f4.n494.Z5.fidonet.Org.