Voltage supply controller
US6420859B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/242
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage supply control apparatus, suitable for being applied to a low voltage operation device. The voltage supply control apparatus has a high threshold voltage transistor and a low threshold voltage transistor. When the low voltage operation device is not working, the low threshold voltage transistor is cut off, and the voltage drop of a high voltage received from the power source terminal of the low voltage operation device is controlled by the high threshold voltage transistor. In contrast, when the low voltage operation device is working, the operation enable signal output thereby conducts the low threshold voltage transistor to control the voltage drop of the high voltage received from the power source terminal, so that a high potential is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.