High switching speed high voltage power supply
US4104564A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1976 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Dec 27, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high voltage power supply for a capacitive load switches between two different voltages of the same polarity relative to ground within about 15 microseconds and is useful as the switching supply for beam penetration cathode ray tubes in short range radar systems. The power supply comprises two power supplies of different voltages which are selectively connected to an output capacitive load. The lower voltage supply is connected directly to the load through a low voltage clamping diode. The higher voltage power supply is connected in series with an inductor, which is, in turn, connected to the load through an up-switch circuit which is closed to increase the power supply output voltage to an upper level and a down-switch circuit which is closed to reduce the power supply voltage to a lower level. Each switch consists of one or more transistors in series with a switching diode. The down-switch circuit is also connected in series with an external, relatively low voltage power supply to guarantee output voltage regulation. A feedback regulator circuit is connected to the high voltage power supply to hold its output voltage constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.