JPS55110314A - Alternating-current constant voltage unit - Google Patents

Alternating-current constant voltage unit

Info

Publication number
JPS55110314A
JPS55110314A JP1757879A JP1757879A JPS55110314A JP S55110314 A JPS55110314 A JP S55110314A JP 1757879 A JP1757879 A JP 1757879A JP 1757879 A JP1757879 A JP 1757879A JP S55110314 A JPS55110314 A JP S55110314A
Authority
JP
Japan
Prior art keywords
load
voltage
circuit
constant
detection signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1757879A
Other languages
Japanese (ja)
Inventor
Tsuguhito Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Life Solutions Ikeda Electric Co Ltd
Original Assignee
Ikeda Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ikeda Electric Co Ltd filed Critical Ikeda Electric Co Ltd
Priority to JP1757879A priority Critical patent/JPS55110314A/en
Publication of JPS55110314A publication Critical patent/JPS55110314A/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To reduce the cost with excellent response of variation in load output by converting and detecting a load voltage or load current in one direction and then by inputting the detection signal, as it is, to an integrator, where it is compared with a reference voltage and integrated.
CONSTITUTION: The application of AC power supply A between input terminals (a) and (b) causes relaxation oscillation circuit P to start oscillating and a control pulse is applied between gate (g) and cathode (k) of triac TR of phase control circuit C via pulse transformer T2 connected to PUT to make TR conduct in phase determined by the time constant of circuit P, so that load B will come on. Simultaneously with that, load voltage E0 is detected via detection transformer T1 connected to load B and a voltage developed across its secondary side is converted into a unidirectional voltage by full-wave rectifier RE2 to obtain detection signal E1. This signal E1 is applied via resistance R10 to the negative terminal of operational amplifier OP, which compares voltage E1 to reference voltage Es and integrates it, and on the basis of the value of difference E2, the bias of time-constant controlling transistor Tr of circuit P is varied to keep the voltage across load B constant.
COPYRIGHT: (C)1980,JPO&Japio
JP1757879A 1979-02-15 1979-02-15 Alternating-current constant voltage unit Pending JPS55110314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1757879A JPS55110314A (en) 1979-02-15 1979-02-15 Alternating-current constant voltage unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1757879A JPS55110314A (en) 1979-02-15 1979-02-15 Alternating-current constant voltage unit

Publications (1)

Publication Number Publication Date
JPS55110314A true JPS55110314A (en) 1980-08-25

Family

ID=11947784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1757879A Pending JPS55110314A (en) 1979-02-15 1979-02-15 Alternating-current constant voltage unit

Country Status (1)

Country Link
JP (1) JPS55110314A (en)

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