Simple low-noise power supply for electrical transient measurements
- 1 November 1979
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 50 (11) , 1483-1484
- https://doi.org/10.1063/1.1135708
Abstract
A very simple means is described for rapidly applying and briefly maintaining a large, essentially noiseless, dc voltage across a capacitive load. The technique is suitable for various nonrepetitive electrical transient measurements, such as carrier mobility determination, occurring over timescales ranging from tens of microseconds to several seconds; it essentially eliminates capacitive currents caused by noise in the power supply voltage, which can interfere with measurement of the true transient current. In an example, the noise on a 10-ms transient current (driven by 2000 V dc, and observed as a voltage across a 100-kOmega load resistor) was barely more than the Johnson noise ( approximately 2x10(-11) A rms) to be expected from the resistor.Keywords
This publication has 1 reference indexed in Scilit:
- Demonstration of true electrophoresis in an insulating liquid at fields up to 3 × 107 Vm−1Journal of Colloid and Interface Science, 1979