Sine wave deflecting circuit
US5051668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Aug 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sine wave deflecting circuit has a simplified configuration capable of ensuring an efficient and stable operation with a function of facilitating external synchronization. The deflecting circuit comprises a resonant circuit comprising a deflecting coil and a resonant capacitor, and a circuit for detecting a signal waveform of the resonant circuit and driving the resonant circuit in accordance with the detection signal, wherein the deflecting coil is driven with sine waves generated by self-oscillation. A deflection interruption time is set during the driving action, and the sine-wave driving frequency is controlled by controlling the length of such interruption time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.