An atmospheric electrical voltmeter follower
- 1 July 1996
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 67 (7) , 2636-2638
- https://doi.org/10.1063/1.1147180
Abstract
Horizontal passive antennas used to sense the potential of the atmosphere above the earth’s surface demand high performance from attached electrometer voltmeter circuits. The floating follower circuit described here allows precision dc measurements of potential difference in the range ±10 V, while maintaining input currents of order 10−15 A. Voltage offsets over most of the dynamic range are less than 50 μV, allowing precise guarding of the input electrode to further minimize input leakage currents. The battery-operated system is well suited to atmospheric electrical measurements using horizontal antennas operating within 10 cm of the earth’s surface, and provides an inexpensive means of precision high impedance voltage measurements.Keywords
This publication has 1 reference indexed in Scilit:
- Electrode effect during nighttime low-wind periodsJournal of Geophysical Research, 1963