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Title: Jitter compensation circuit

Abstract

The instantaneous V.sub.co signal on a charging capacitor is sampled and the charge voltage on capacitor C.sub.o is captured just prior to its discharge into the first stage of magnetic modulator. The captured signal is applied to an averaging circuit with a long time constant and to the positive input terminal of a differential amplifier. The averaged V.sub. co signal is split between a gain stage (G=0.975) and a feedback stage that determines the slope of the voltage ramp applied to the high speed comparator. The 97.5% portion of the averaged V.sub.co signal is applied to the negative input of a differential amplifier gain stage (G=10). The differential amplifier produces an error signal by subtracting 97.5% of the averaged V.sub.co signal from the instantaneous value of sampled V.sub.co signal and multiplying the difference by ten. The resulting error signal is applied to the positive input of a high speed comparator. The error signal is then compared to a voltage ramp that is proportional to the averaged V.sub.co values squared divided by the total volt-second product of the magnetic compression circuit.

Inventors:
 [1];  [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871143
Patent Number(s):
5666385
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
jitter; compensation; circuit; instantaneous; signal; charging; capacitor; sampled; charge; voltage; captured; prior; discharge; stage; magnetic; modulator; applied; averaging; time; constant; positive; input; terminal; differential; amplifier; averaged; split; 975; feedback; determines; slope; ramp; speed; comparator; 97; portion; negative; 10; produces; error; subtracting; value; multiplying; difference; resulting; compared; proportional; values; squared; divided; total; volt-second; product; compression; input terminal; differential amplifier; error signal; time constant; magnetic compression; voltage ramp; charge voltage; magnetic modulator; compression circuit; charging capacitor; total volt-second; compensation circuit; /375/332/

Citation Formats

Sullivan, James S, and Ball, Don G. Jitter compensation circuit. United States: N. p., 1997. Web.
Sullivan, James S, & Ball, Don G. Jitter compensation circuit. United States.
Sullivan, James S, and Ball, Don G. Wed . "Jitter compensation circuit". United States. https://www.osti.gov/servlets/purl/871143.
@article{osti_871143,
title = {Jitter compensation circuit},
author = {Sullivan, James S and Ball, Don G},
abstractNote = {The instantaneous V.sub.co signal on a charging capacitor is sampled and the charge voltage on capacitor C.sub.o is captured just prior to its discharge into the first stage of magnetic modulator. The captured signal is applied to an averaging circuit with a long time constant and to the positive input terminal of a differential amplifier. The averaged V.sub. co signal is split between a gain stage (G=0.975) and a feedback stage that determines the slope of the voltage ramp applied to the high speed comparator. The 97.5% portion of the averaged V.sub.co signal is applied to the negative input of a differential amplifier gain stage (G=10). The differential amplifier produces an error signal by subtracting 97.5% of the averaged V.sub.co signal from the instantaneous value of sampled V.sub.co signal and multiplying the difference by ten. The resulting error signal is applied to the positive input of a high speed comparator. The error signal is then compared to a voltage ramp that is proportional to the averaged V.sub.co values squared divided by the total volt-second product of the magnetic compression circuit.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

Patent:

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