JPS5553711A - Effective value feedback-type thyristor phase controller - Google Patents

Effective value feedback-type thyristor phase controller

Info

Publication number
JPS5553711A
JPS5553711A JP12729378A JP12729378A JPS5553711A JP S5553711 A JPS5553711 A JP S5553711A JP 12729378 A JP12729378 A JP 12729378A JP 12729378 A JP12729378 A JP 12729378A JP S5553711 A JPS5553711 A JP S5553711A
Authority
JP
Japan
Prior art keywords
voltage
effective value
resistances
value
effective
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.)
Granted
Application number
JP12729378A
Other languages
Japanese (ja)
Other versions
JPS627567B2 (en
Inventor
Koji Harita
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.)
Toshin Kogyo Co Ltd
Original Assignee
Toshin Kogyo 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 Toshin Kogyo Co Ltd filed Critical Toshin Kogyo Co Ltd
Priority to JP12729378A priority Critical patent/JPS5553711A/en
Publication of JPS5553711A publication Critical patent/JPS5553711A/en
Publication of JPS627567B2 publication Critical patent/JPS627567B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To ensure the high-stability and high-accuracy control by feeding the effective value voltage back to the amplifier circuit, thus realizing an effective application to the electric furnace or the like.
CONSTITUTION: In the control of the electric furnace voltage, the heating temperature is proportional to the heating power (voltage). In this connection, the thyristor is formed into the effective value feedback type to prevent the variation of the control temperature. With application of DC input voltage 40 in the effective value feedback SCR phase control circuit with the polygonal line approximation correction, transistor 41 conducts with the ignition secured to SCR45 and 46. And the mean value voltage emerges across capacitor C59 via feedback circuits 49W58. On the other hand, with increment of split voltage 15W53, the current flows to C59 via diodes 55 and 57 plus resistances 56 and 58. As a result, the voltage of C59 becomes higher than the mean voltage value, and the charging voltage of C59 features the broken line type change at the split voltage point. In this connection, a linear relation can be secured between the voltage 40 and the effective value of load 48 by approximating resistances 51W55 which decide the polygonal line voltage plus resistances 56 and 58 which decide the charging current to the effective value respectively.
COPYRIGHT: (C)1980,JPO&Japio
JP12729378A 1978-10-18 1978-10-18 Effective value feedback-type thyristor phase controller Granted JPS5553711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12729378A JPS5553711A (en) 1978-10-18 1978-10-18 Effective value feedback-type thyristor phase controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12729378A JPS5553711A (en) 1978-10-18 1978-10-18 Effective value feedback-type thyristor phase controller

Publications (2)

Publication Number Publication Date
JPS5553711A true JPS5553711A (en) 1980-04-19
JPS627567B2 JPS627567B2 (en) 1987-02-18

Family

ID=14956370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12729378A Granted JPS5553711A (en) 1978-10-18 1978-10-18 Effective value feedback-type thyristor phase controller

Country Status (1)

Country Link
JP (1) JPS5553711A (en)

Also Published As

Publication number Publication date
JPS627567B2 (en) 1987-02-18

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