GFI Sensor circuit
US4268885A · kind A · utility
3Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Aug 2, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/337
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an electronic module for a ground fault interrupter the portion that amplifies a sensed ground fault signal is in the form of a series of cascaded CMOS inverter stages. The electronic module also includes an additional CMOS inverter providing a balanced input to the amplifier to aid in preventing operation of the ground fault interrupter during the turn-on period of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.