Voltage regulator for a deflection system
US4009426A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1975 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Jul 10, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/83
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voltage regulator for a thyristor deflection system of the commutating network type includes a reverse current control network which couples a source of direct current to the commutating network. The reverse current control network includes a diode which provides for energy transfer from the source of direct current to the commutating network during a first portion of the energy storage interval and a silicon controlled rectifier (SCR) which provides for energy transfer from the commutating network to the source of direct current during a second portion of the energy storage interval after the SCR is enabled. A resistor coupled between the gate and anode electrodes of the SCR provides a gate current for enabling the conduction of the SCR. A disabling network coupled between the deflection system high voltage transformer and the gate of the SCR provides for the diversion of the gate current produced by the resistor for an interval determined by the level of signals produced by the high voltage transformer to control conduction time of the SCR and thereby regulate the voltage in the commutating network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.