Advanced high voltage power supply for night vision image intens

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

250214C, H01J 4014

Patent

active

052181944

ABSTRACT:
The improved power supply of the present invention adjusts the voltages applied to an image tube to provide automatic brightness control and automatically compensate for temperature changes. A first oscillator, transformer and multiplier supply DC high voltage to a microchannel plate (MCP) electron multiplier of an image tube. The oscillator is controlled via control circuitry to modify the voltage applied to the MCP to automatically compensate for temperature changes associated with an image tube and to provide an automatic brightness control mode of operation. A second oscillator, transformer and individual multipliers are used to supply appropriate DC voltages to the cathode and screen of an image tube; these voltages are also automatically adjusted for temperature changes associated with the image tube. The screen current is detected and is used by additional control circuitry as feedback for the first oscillator to provide the automatic brightness control mode of operation. The power supply may separately adjust the operational voltage supplied to the MCP and the screen current needed to activate the automatic brightness control mode of operation.

REFERENCES:
patent: 3666957 (1972-05-01), Wyess
patent: 3739178 (1973-06-01), Chow
patent: 3816744 (1974-06-01), Chow
patent: 3864595 (1975-02-01), Lawrence et al.
patent: 3872302 (1975-03-01), Fender
patent: 3976874 (1976-08-01), Lange et al.
patent: 4025955 (1977-05-01), Grallien et al.
patent: 4037132 (1977-07-01), Hoover
patent: 4044249 (1977-08-01), Moore, Jr. et al.
patent: 4139798 (1979-02-01), Hoover
patent: 4166213 (1979-08-01), Hoover
patent: 4195222 (1980-03-01), Fouilloy
patent: 4412128 (1983-10-01), McDonald
patent: 4433236 (1984-02-01), Shimada
patent: 4625106 (1986-11-01), Bender et al.
patent: 4839569 (1989-06-01), Dallin, II
patent: 4924080 (1990-05-01), Caserta et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Advanced high voltage power supply for night vision image intens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Advanced high voltage power supply for night vision image intens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advanced high voltage power supply for night vision image intens will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1935695

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.