JPS56125960A - Automatic pulse phase shifter for single phase - Google Patents

Automatic pulse phase shifter for single phase

Info

Publication number
JPS56125960A
JPS56125960A JP2792880A JP2792880A JPS56125960A JP S56125960 A JPS56125960 A JP S56125960A JP 2792880 A JP2792880 A JP 2792880A JP 2792880 A JP2792880 A JP 2792880A JP S56125960 A JPS56125960 A JP S56125960A
Authority
JP
Japan
Prior art keywords
voltage
power source
source voltage
comparator
edm
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
JP2792880A
Other languages
Japanese (ja)
Inventor
Masanobu Nemezawa
Gihe Obana
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2792880A priority Critical patent/JPS56125960A/en
Publication of JPS56125960A publication Critical patent/JPS56125960A/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)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To enable to decide accurate front end limiter values even when a synchronous power source voltage is fluctuating by a method wherein the magnitudes of a voltage obtained by multiplying the maximum value of the synchronous power source voltage by a coefficient corresponding to the front end limiter and of the synchronous power source voltage are compared. CONSTITUTION:The synchronous power source voltage VSYNC is stepped down by a transformer 21 and the whole wave thereof is rectified in a rectifier circuit 22, and is inputted to the maximum value detector circuit 23 to be converted into a DC voltage EDM corresponding to the maximum value. A voltage K.EDM obtained by multiplying the voltage EDM by the coefficient and the voltage VSYNC are compared in a comparator 24. During the output voltage of the comparator 24 is negative, the operation of a phase shifter circuit 25 is made to stop, and the phase shifter circuit 25 is made to operate only during the output voltage becomes to positive. Whereupon the wave from of output of the comparator 24 makes the form as shown with a solid line in the figure when the power source voltage keeps the rated value, and becomes as shown with a dotted line when the power source voltage comes down to 50%. Accordingly the fixed front limiter values alphamin, alphamax can be obtained constantly even the power source voltage is fluctuating.
JP2792880A 1980-03-07 1980-03-07 Automatic pulse phase shifter for single phase Pending JPS56125960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2792880A JPS56125960A (en) 1980-03-07 1980-03-07 Automatic pulse phase shifter for single phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2792880A JPS56125960A (en) 1980-03-07 1980-03-07 Automatic pulse phase shifter for single phase

Publications (1)

Publication Number Publication Date
JPS56125960A true JPS56125960A (en) 1981-10-02

Family

ID=12234541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2792880A Pending JPS56125960A (en) 1980-03-07 1980-03-07 Automatic pulse phase shifter for single phase

Country Status (1)

Country Link
JP (1) JPS56125960A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644055U (en) * 1992-11-17 1994-06-10 日東工業株式会社 Outlet mounting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644055U (en) * 1992-11-17 1994-06-10 日東工業株式会社 Outlet mounting mechanism

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