US 6,982,549 B1
Micro-electrometer
Thomas Jay Wells, 5036 N. Albany Ave., Chicago, Ill. 60625 (US); and Robert Scott Elliott, 14544 S. State Rd. 39, Hanna, Ind. 46340 (US)
Filed on Dec. 31, 2003, as Appl. No. 10/750,588.
Int. Cl. G01R 29/12 (2006.01)
U.S. Cl. 324—72 9 Claims
OG exemplary drawing
 
1. A non-contact voltmeter comprising:
a source of power;
a transformer engaged to the power source;
an on/off switch engaged between the power source and transformer;
a terminal strip;
an antenna engaged to an input terminal of the terminal strip;
an earth around engaged to a ground terminal of the terminal strip;
a space charge tube comprising a plurality of grids and a plate;
the input terminal of the terminal strip being engaged to one grid of the tube;
a meter engaged to the plate of the space charge tube;
a gas discharge tube engaged to an input of the tube;
the tube at substantially reduced cathode temperature and electron emission, whereby voltages or other related quantities or qualities are measured in real time using only the naturally occurring voltage and conductivity present as a grid control source.