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Title: TRIAC/SCR proportional control circuit

Abstract

A power controller device which uses a voltage-to-frequency converter in conjunction with a zero crossing detector to linearly and proportionally control AC power being supplied to a load. The output of the voltage to frequency converter controls the reset input of a R-S flip flop, while an 0 crossing detector controls the set input. The output of the flip flop triggers a monostable multivibrator controlling the SCR or TRIAC firing circuit connected to the load. Logic gates prevent the direct triggering of the multivibrator in the rare instance where the reset and set inputs of the flip flop are in coincidence. The control circuit can be supplemented with a control loop, providing compensation for line voltage variations.

Inventors:
Publication Date:
Research Org.:
Knolls Atomic Power Lab., Niskayuna, NY (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
757801
Patent Number(s):
PATENTS-US-A8923629
Application Number:
8-923,629; TRN: AH200022%%207
Assignee:
DOEGC; EDB-00:058110
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent Application
Resource Relation:
Patent File Date: 1997 Sep 04; Other Information: PBD: 1 Dec 1997
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; METAL INDUSTRY; ELECTRIC FURNACES; POWER CONDITIONING CIRCUITS; AC SYSTEMS; POWER SUPPLIES; ELECTRIC CONTROLLERS

Citation Formats

Hughes, Wallace J. TRIAC/SCR proportional control circuit. United States: N. p., 1997. Web.
Hughes, Wallace J. TRIAC/SCR proportional control circuit. United States.
Hughes, Wallace J. Mon . "TRIAC/SCR proportional control circuit". United States. https://www.osti.gov/servlets/purl/757801.
@article{osti_757801,
title = {TRIAC/SCR proportional control circuit},
author = {Hughes, Wallace J},
abstractNote = {A power controller device which uses a voltage-to-frequency converter in conjunction with a zero crossing detector to linearly and proportionally control AC power being supplied to a load. The output of the voltage to frequency converter controls the reset input of a R-S flip flop, while an 0 crossing detector controls the set input. The output of the flip flop triggers a monostable multivibrator controlling the SCR or TRIAC firing circuit connected to the load. Logic gates prevent the direct triggering of the multivibrator in the rare instance where the reset and set inputs of the flip flop are in coincidence. The control circuit can be supplemented with a control loop, providing compensation for line voltage variations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {12}
}

Patent Application:

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