Charge recovery for enhanced transistor drive
US8111214B2 · kind B2 · utility
0Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2004 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Aug 1, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for an electro luminescent display in which a flyback converter and an H-bridge are used to provide a high voltage alternating current to a capacitive load from a low voltage DC source. Each time the polarity of the capacitive load is reversed, the capacitive load discharges. This high voltage discharge is stored on a low voltage capacitor and subsequently used as an auxiliary power supply to power the switching elements of the control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.