JPS57134726A - Conduction controller for lattice control rectifying element - Google Patents

Conduction controller for lattice control rectifying element

Info

Publication number
JPS57134726A
JPS57134726A JP1954081A JP1954081A JPS57134726A JP S57134726 A JPS57134726 A JP S57134726A JP 1954081 A JP1954081 A JP 1954081A JP 1954081 A JP1954081 A JP 1954081A JP S57134726 A JPS57134726 A JP S57134726A
Authority
JP
Japan
Prior art keywords
zero cross
width
pulse
thyristors
rectifying element
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
JP1954081A
Other languages
Japanese (ja)
Inventor
Masao Hosaka
Yoshitaka Ogino
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP1954081A priority Critical patent/JPS57134726A/en
Publication of JPS57134726A publication Critical patent/JPS57134726A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To control for thyristors for conduction with an accurate phase, by detecting the width of a zero cross detecting pulse with a microcomputer and correcting the trigger phase for thyristors or the like in accordance with the width. CONSTITUTION:A zero cross detection circuit 42 consists of a full wave rectifying bridge D0 to which a stepped down voltage of about 15 volts is applied, photocoupler PC and wave shaping circuit, and a zero cross detection pulse ZCP of a low level is generated near the zero cross point of the power supply voltage and it is inputted to an interruption terminal INT of an MPU and the pulse width detection is made by setting the fall as a start point. The load can be controlled via a high-speed switching circuit (not shown) corresponding to a Triac.
JP1954081A 1981-02-12 1981-02-12 Conduction controller for lattice control rectifying element Pending JPS57134726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1954081A JPS57134726A (en) 1981-02-12 1981-02-12 Conduction controller for lattice control rectifying element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1954081A JPS57134726A (en) 1981-02-12 1981-02-12 Conduction controller for lattice control rectifying element

Publications (1)

Publication Number Publication Date
JPS57134726A true JPS57134726A (en) 1982-08-20

Family

ID=12002145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1954081A Pending JPS57134726A (en) 1981-02-12 1981-02-12 Conduction controller for lattice control rectifying element

Country Status (1)

Country Link
JP (1) JPS57134726A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05191538A (en) * 1992-01-10 1993-07-30 Ya Man Ltd Quality evaluating device for reproduced picture
JPH0562186U (en) * 1992-01-30 1993-08-13 日本電気ホームエレクトロニクス株式会社 Power control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05191538A (en) * 1992-01-10 1993-07-30 Ya Man Ltd Quality evaluating device for reproduced picture
JPH0562186U (en) * 1992-01-30 1993-08-13 日本電気ホームエレクトロニクス株式会社 Power control circuit

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