Charge rate electrometer including means for substantially eliminating leakage currents
US5572118A · kind A · utility
12Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Jun 29, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R5/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosed electrometer is of the type including an integrating amplifier and an electronically controlled switch. When the switch is closed, the electrometer is reset or cleared, and when the switch is open, the amplifier operates as an integrator. The switch is configured to substantially eliminate leakage currents between the switch and the inputs of the amplifier. The electrometer is operative for very small input currents and is operative over a wide dynamic range. The disclosed electrometer may be used to implement a highly accurate pressure transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.