Apparatus and method for utilizing a snubber capacitor to power a silicon-controlled rectifier gate trigger circuit
US6396672B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Feb 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit that includes a silicon-controlled rectifier and a silicon-controlled rectifier gate trigger circuit connected to the silicon-controlled rectifier. A snubber capacitor is connected to the silicon-controlled rectifier and the silicon-controlled rectifier gate trigger circuit. The snubber capacitor generates a snubber capacitor voltage during an off state of the silicon-controlled rectifier. The snubber capacitor voltage thus developed is then used to power the silicon-controlled rectifier gate trigger circuit. The circuit also includes a resister-zener diode circuit connected to the snubber capacitor and an auxiliary capacitor. The auxiliary capacitor is charged through the resister-zener diode circuit by the snubber capacitor voltage. A voltage regulator is connected between the auxiliary capacitor and the silicon-controlled rectifier gate trigger circuit for providing a regulated voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.