JPS57173374A - Phase controlling circuit - Google Patents

Phase controlling circuit

Info

Publication number
JPS57173374A
JPS57173374A JP5891981A JP5891981A JPS57173374A JP S57173374 A JPS57173374 A JP S57173374A JP 5891981 A JP5891981 A JP 5891981A JP 5891981 A JP5891981 A JP 5891981A JP S57173374 A JPS57173374 A JP S57173374A
Authority
JP
Japan
Prior art keywords
fet6
current
voltage
power source
flows
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
JP5891981A
Other languages
Japanese (ja)
Inventor
Sadahiro Shimada
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5891981A priority Critical patent/JPS57173374A/en
Publication of JPS57173374A publication Critical patent/JPS57173374A/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 maintain a load current constant with respect to the variation in the voltage of a power source by supplying the power source voltage through a transformer and a resistor to an FET and controlling the gate voltage of the FET. CONSTITUTION:When a power source 1 is in a positive cycle, a current freely flows through an FET9, and an FET6 becomes negative at its gate. Accordingly, the charging current of the capacitor 5 is controlled by the FET6. The gate voltage VGS6 of the FET6 should satisfy the condition of the equation, where R7 represents the resistance value of a variable resistor 7, I6 represents the current which flows through the FET6, and I10 represents the current which flows through a resistor 8 from a transformer 10. When the power source 1 is in negative cycle, the relationship between the FET9 and the FET6 becomes reverse to the above. When the voltage of the power source becomes high, the current I10 increases, the gate voltage of the FET6 becomes high in negative voltage with the result that the ON phase of the thyristor 3 is delayed, thereby reducing the conducting angle of the load current.
JP5891981A 1981-04-17 1981-04-17 Phase controlling circuit Pending JPS57173374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5891981A JPS57173374A (en) 1981-04-17 1981-04-17 Phase controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5891981A JPS57173374A (en) 1981-04-17 1981-04-17 Phase controlling circuit

Publications (1)

Publication Number Publication Date
JPS57173374A true JPS57173374A (en) 1982-10-25

Family

ID=13098225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5891981A Pending JPS57173374A (en) 1981-04-17 1981-04-17 Phase controlling circuit

Country Status (1)

Country Link
JP (1) JPS57173374A (en)

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