Global to push GA events into
skip to main content

Title: Jitter compensation circuit

The instantaneous 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 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 signal from the instantaneous value of sampled 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 values squared divided by the total volt-second product of the magnetic compression circuit.
 [1];  [1]
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5666385
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
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/