Discharge circuit configured for filter capacitor of power factor connector and having a control unit and a discharge unit
US8289004B2 · kind B2 · utility
2Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2010 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Mar 14, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A discharge circuit includes an OC (Optical Coupler), a capacitor, an NPN-type transistor, and a discharge unit. The discharge circuit is parallel connected to a PFC (power factor corrector) circuit which includes a filter capacitor. The discharge unit has a MOSFET and a discharge resistor. A drain of the MOSFET is connected to a first terminal of the PFC circuit via the discharge resistor, a gate thereof is connected the anode of the capacitor, and a source thereof is connected to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.