Vertical deflection circuit
US4023069A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Apr 28, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/3091
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A push-pull amplifier, which is supplied with a first voltage, provides deflection current to a vertical deflection winding during a trace period of each deflection cycle. The amplifier is switched off by an input waveform to initiate the retrace interval. A voltage developed across the winding to oppose a change in deflection current activates switching means to couple the winding to a second voltage source during retrace. The voltage applied to the winding during retrace is of greater magnitude than the first voltage. The switching means bypasses the winding current away from the main conducting paths of the amplifier during retrace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.