Variable bleeder circuit
US9769901B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2016 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Jun 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bleeder circuit includes an input current sense circuit, coupled to one of first and second input terminals of a driver circuit, to output a bleeder on/off signal in response to an input current through the first and second input terminals of the driver circuit. A variable current circuit is coupled between the first and second input terminals of the driver circuit and coupled to the input current sense circuit. The variable current circuit is coupled to conduct a bleeder current between the first and second input terminals in response to the bleeder on/off signal. A current scaling circuit is coupled to the variable current circuit to output a current scale signal which is received by the variable current circuit in response to a shutdown signal. The shutdown signal is representative of a conduction angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.