Ground fault current rectification and measuring circuit
US4947126A · kind A · utility
14Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Apr 4, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for monitoring alternating currents and providing a signal representative of the current. The signals are rectified by a modified full wave rectrifier to provide a power source, a positive signal associated with the positive range of the current, and a positive signal associated with the negative range of the current. The two positive signals serve to preserve the polarity information associated with the current being monitored. The apparatus also provides for combining the negative signals to produce other signals useable by a microprocessor and an analog logic circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.