Shunt A.C. voltage regulator with modified full-wave bridge
US3939396A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Feb 6, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/44
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A semiconductor switching device is connected in shunt with an A.C. voltage source to be regulated. A modified full-wave bridge rectifier is connected across the voltage source by a first pair of diagonally opposite nodes. A control circuit including a capacitor is connected across the output between a second pair of diagonally opposite nodes of the bridge rectifier to control a gate electrode of the switching device to control the triggering of the switching device in response to the voltage across the bridge rectifier output. The triggering of the switching device regulates the voltage supplied by the voltage source. The bridge rectifier includes an impedance network comprising first and second resistors branching from one of the nodes of the second diagonal pair, each resistor being connected via a diode to a different node of the first diagonal pair. The impedance network also includes a third resistor coupled between the junction of the first resistor and corresponding diode and the junction of the second resistor and corresponding diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.