Negative voltage genarating circuit
US5614814A · kind A · utility
1Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative voltage generating circuit includes an oscillating unit constructed of a ring oscillator for outputting a pulse signal with a high frequency and a polarity inverting unit in which the pulse signal is inputted to charge negative voltage. This negative voltage generating circuit is miniaturized and outputs a stable negative voltage. Further, the negative voltage to be outputted can be controlled by varying a resistance value through a control of an FET in a voltage controlling unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.