Charging circuit
US5705911A · kind A · utility
18Cited by
7References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00309
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An over-charge protection FET and an over-discharge protection FET are connected in series with the rechargeable battery and turned ON or OFF by a control circuit. An ON-OFF switching device is connected between G and S of the over-charge protection FET and controlled by an output signal from the control circuit. An over-charge protection FET drain voltage input circuit is connected to the input side of the ON-OFF switching device. When the drain voltage of the over-charge protection FET is high, the input circuit sets the ON-OFF switching device to the ON state to forcibly set the over-charge protection FET to the OFF state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.