Power source circuit with a compact size and operating efficiently at low temperature
US5408401A · kind A · utility
32Cited by
12References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1991 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Oct 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/934
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power source circuit converts direct: current (DC) power into alternating current (AC) power having a required frequency, and provides DC output power according to the AC power. The power source circuit comprises an oscillator for providing a control signal that determines a converting frequency of the AC power; an element provided for the oscillator, having temperature characteristics for increasing the converting frequency at a low temperature; and a device for determining the converting frequency of the AC power according to the control signal provided by the oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.