Negative voltage drive circuit
US5838190A · kind A · utility
2Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative voltage drive circuit according to the present invention comprises a switching means coupled between an input terminal and an output terminal; a cross latch pumping means for controlling the switching means in response to first and second clock signals and for maintaining the lower output voltage than that of said charge pump; and a capacitor which starts pumping operation according to the first clock signal when the output terminal is isolated to the input terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.