Electric lamp and discharge devices: systems – Plural power supplies – Discharge device and/or rectifier in one of the supply circuits
Patent
1976-12-27
1978-08-01
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Plural power supplies
Discharge device and/or rectifier in one of the supply circuits
315376, 343 5CD, 358 73, H01J 2980
Patent
active
041045645
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.
REFERENCES:
patent: 3659190 (1972-04-01), Galluppi
patent: 3697880 (1972-10-01), Melchior et al.
patent: 3780339 (1973-12-01), Mayle
patent: 3887838 (1975-06-01), Thurston
Cohen David A.
Lien Charles
LaRoche Eugene R.
Venus Scientific Inc.
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