Accession Number : ADD013654

Title :   High Voltage Power Supply Fault Isolation System.

Descriptive Note : Patent, Filed 4 Mar 86, patented 23 Feb 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Miller, Daniel G

Report Date : 23 Feb 1988

Pagination or Media Count : 4

Abstract : An electronics circuit for improving the fault isolation of failures between an electron tube radio frequency (RF) amplifier and its high voltage power supply is disclosed. High voltage power supplies control their output voltage by comparing a feedback voltage against a reference. This comparison is used to develop an error voltage which, in turn, drives a pulsewidth modulator that corrects the feedback voltage to the reference. The output of a digital-to-analog converter (DAC) is used as the reference voltage. The DAC is driven by a counter which would count to the correct reference voltage represented by a specific count. The final count is determined by a comparator which compares the counter output to the desired final count and stops the counter when it is reached.

Descriptors :   *CIRCUITS, *FAULTS, *ISOLATION, *PATENTS, COUNTING METHODS, DIGITAL TO ANALOG CONVERTERS, ELECTRON TUBES, ELECTRONICS, ERRORS, FEEDBACK, HIGH POWER, HIGH VOLTAGE, OUTPUT, RADIOFREQUENCY, VOLTAGE

Subject Categories : Electric Power Production and Distribution
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE