Apparatus and method for discharging capacitor of input filter of power supply, and power supply including the apparatus
US8710806B2 · kind B2 · utility
6Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2011 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Jun 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply includes an input filter and a discharging device. The input filter includes a capacitor to which an AC power source is provided. The discharging device rectifies and samples the AC power source. The discharging device generates a reference voltage according to a peak voltage of a generated sampling signal, generates an AC power source cutoff detection signal according to a comparison signal generated by comparing the sampling signal and a reference voltage, and discharges the capacitor through a discharging resistor according to the AC power source cutoff detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.