Inverter circuit with symmetry control
US4429359A · kind A · utility
8Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Dec 24, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter circuit having transistor switches connected to alternately and repetitively apply a-c electrical energy to a load such as a fluorescent lamp. An oscillator control circuit supplies control pulses to the transistor switches in a manner to control their switching to insure a symmetrical waveform at the load. D-C power for the oscillator control circuit is obtained by rectification of the a-c load energy, and the oscillator frequency is adjustable by means of a control voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.