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Title: Logic elements for reactor period meter

Abstract

Logic elements are provided for a reactor period meter trip circuit. For one element, first and second inputs are applied to first and second chopper comparators, respectively. The output of each comparator is O if the input applied to it is greater than or equal to a trip level associated with each input and each output is a square wave of frequency f if the input applied to it is less than the associated trip level. The outputs of the comparators are algebraically summed and applied to a bandpass filter tuned to f. For another element, the output of each comparator is applied to a bandpass filter which is tuned to f to give a sine wave of frequency f. The outputs of the filters are multiplied by an analog multiplier whose output is 0 if either input is 0 and a sine wave of frequency 2f if both inputs are a frequency f.

Inventors:
 [1];  [1]
  1. Downers Grove, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
862475
Patent Number(s):
3942014
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
logic; elements; reactor; period; meter; provided; trip; circuit; element; inputs; applied; chopper; comparators; respectively; output; comparator; input; equal; level; associated; square; wave; frequency; outputs; algebraically; summed; bandpass; filter; tuned; sine; filters; multiplied; analog; multiplier; 2f; reactor period; bandpass filter; sine wave; pass filter; square wave; period meter; logic elements; /250/376/976/

Citation Formats

McDowell, William P, and Bobis, James P. Logic elements for reactor period meter. United States: N. p., 1976. Web.
McDowell, William P, & Bobis, James P. Logic elements for reactor period meter. United States.
McDowell, William P, and Bobis, James P. Thu . "Logic elements for reactor period meter". United States. https://www.osti.gov/servlets/purl/862475.
@article{osti_862475,
title = {Logic elements for reactor period meter},
author = {McDowell, William P and Bobis, James P},
abstractNote = {Logic elements are provided for a reactor period meter trip circuit. For one element, first and second inputs are applied to first and second chopper comparators, respectively. The output of each comparator is O if the input applied to it is greater than or equal to a trip level associated with each input and each output is a square wave of frequency f if the input applied to it is less than the associated trip level. The outputs of the comparators are algebraically summed and applied to a bandpass filter tuned to f. For another element, the output of each comparator is applied to a bandpass filter which is tuned to f to give a sine wave of frequency f. The outputs of the filters are multiplied by an analog multiplier whose output is 0 if either input is 0 and a sine wave of frequency 2f if both inputs are a frequency f.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

Patent:

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