On 23 March 2018 at 01:07, Bob Albert via volt-nuts <volt-nuts@febo.com> wrote:
> I found several electrostatic voltmeters on ebay. The brand I remember > is Sensitive Research. > Bob > So something like this? https://www.ebay.com/itm/Singer-ESD-7-Sensitive-Research-Electrostatic-Voltmeter-1500-Volt-Range/122976453378 1500 V would probably do. I must admit, I don't understand how these work. Do you need to have a power supply to balance the voltage? I can't see how taking almost no current can physically make a meter needle move, as that needs energy. I see some are contact, and some non-contact. It is 01:45 here, so I am just about to go asleep, but will read any replies later today. I would be interested in making a more modern version, but really don't know how. Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
