JPS576568A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS576568A
JPS576568A JP7899880A JP7899880A JPS576568A JP S576568 A JPS576568 A JP S576568A JP 7899880 A JP7899880 A JP 7899880A JP 7899880 A JP7899880 A JP 7899880A JP S576568 A JPS576568 A JP S576568A
Authority
JP
Japan
Prior art keywords
transistor
capacitor
electric power
control circuit
main transformer
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
JP7899880A
Other languages
Japanese (ja)
Inventor
Kimihito Abe
Kenichi Onda
Takuji Matsumura
Hisao Amano
Yukio Suzuki
Hiroki Ishige
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 JP7899880A priority Critical patent/JPS576568A/en
Publication of JPS576568A publication Critical patent/JPS576568A/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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H02M3/3378—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To enhance utilization factor of the main transformer of a switching regulator by a method wherein the first primary winding of the main transformer being provided with a switching element in the input side is made to supply electric power only to a control circuit and the second primary winding is made to supply to both a load and the control circuit. CONSTITUTION:When a capacitor C1 is charged by an electric power source Ein through a resistor R1, a transistor Tr1 is ignited. The capacitor C1 is charged in the opposite direction by a base current IB, the transistor Tr1 is made to TURN-OFF, and by repetition of this action, the voltage of a capacitor C3 to act as an auxiliary electric power source is made to rise sufficiently. When the transistor Tr1 performs self-oscillation at this time, because a voltage of backward polarity is generated in the secondary winding N2 of the main transformer T1, no output is made to rise. When a transistor Tr2 is driven by a pulse duration control signal sent from an output detecting circuit 2 and a control circuit 1, the primary winding N12 is excited in the polarity according to ON-duty of the signal thereof to make an output voltage in the secondary winding N2 to rise.
JP7899880A 1980-06-13 1980-06-13 Switching regulator Pending JPS576568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7899880A JPS576568A (en) 1980-06-13 1980-06-13 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7899880A JPS576568A (en) 1980-06-13 1980-06-13 Switching regulator

Publications (1)

Publication Number Publication Date
JPS576568A true JPS576568A (en) 1982-01-13

Family

ID=13677554

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7899880A Pending JPS576568A (en) 1980-06-13 1980-06-13 Switching regulator

Country Status (1)

Country Link
JP (1) JPS576568A (en)

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