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:

 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:
 W31109ENG38
 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}
}