Circuit having a bidirectional switch for supplying a load from an AC voltage supply
US6208126A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Nov 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/687
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit is provided for supplying a load from an AC voltage supply. The circuit includes a control circuit and a bidirectional switch coupled in series with the load. The bidirectional switch includes two one-way switches connected in antiparallel, and the control circuit controls the bidirectional switch based on a relatively low DC voltage. The bidirectional switch is connected to a first terminal of the AC voltage supply, and the DC voltage is referenced to the first terminal of the AC voltage supply. Additionally, an apparatus connected to an AC voltage supply and a relatively low DC voltage is provided. The apparatus includes a control circuit, a load to be supplied by the AC voltage supply, and a bidirectional switch coupled in series with the load. The bidirectional switch includes two one-way switches connected in antiparallel, and the control circuit controls the bidirectional switch based on the DC voltage. The bidirectional switch is connected to a first terminal of the AC voltage supply, and the DC voltage is referenced to the first terminal of the AC voltage supply. In one preferred embodiment, each of the two one-way switches includes a MOS transistor coupled in ser…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.