Power supply for consuming lower power in a standby mode
US6316844A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 2000 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | May 26, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A standby power supply circuit with a low power consumption including: a voltage converter for rectifying a commercially used AC power source to convert it to a DC voltage; a standby power supplier for receiving the DC voltage from the voltage converter; a voltage comparator for comparing the DC voltage outputted from the voltage converter with pre-set reference voltages and outputting a predetermined pulse signal; and a switch unit for ON/OFF controlling the operation of the voltage converter according to a pulse signal outputted from the voltage comparator. With the construction, a zero cross switch is intermittently turned on or turned off, so that the standby transformer is turned on or turned off, by which the standby power can be reduced when the electric instruments are in a standby state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.