Gauge driver for use with a remote sensor and having reduced offset potential response
US5059916A · kind A · utility
9Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jan 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R7/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gauge circuit for use with a wide angle air core meter display having high linearity and adapted for use with a remote sensing resistor. A constant sense current is provided and its value is moudlated at a frequency that is high with respect to the frequencies associated with offset voltages that occur with a sense resistor that is grounded remotely from the gauge ground. A low duty cycle pulse modulation shape is disclosed for the purpose of minimizing electromagnetic interference radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.