High voltage supply having a voltage stabilizer
US5043598A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Sep 15, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high voltage generating circuit which includes a switching circuit for switching a DC input, a fly-back transformer whose input coil is driven by pulses delivered from the switching actuation of the switching actuation of the circuit, a rectifier circuit for rectifying the fly-back voltage generated in the output coil of the fly-back transformer, a capacitor for smoothing the rectified output, and a voltage stabilizing circuit. A diode is electrically connected to one terminal of the output coil of the fly-back transformer on the low-voltage side thereof as compared with the ground, the diode being so determined as to position in the forward direction to the direction of rectification. The voltage stabilizing circuit is formed by a voltage sensing circuit for sensing a DC high voltage output, comparing it with a reference voltage applied from a reference voltage source and generating an output of a result of comparison and a control circuit connected between the anode of the diode and the ground terminal. The control circuit is formed of a plurality of transistors including transistors controlled in response to the output from the voltage sensing circuit and a protective circuit …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.