JPS5625378A - Self-excited forward converter - Google Patents

Self-excited forward converter

Info

Publication number
JPS5625378A
JPS5625378A JP10148079A JP10148079A JPS5625378A JP S5625378 A JPS5625378 A JP S5625378A JP 10148079 A JP10148079 A JP 10148079A JP 10148079 A JP10148079 A JP 10148079A JP S5625378 A JPS5625378 A JP S5625378A
Authority
JP
Japan
Prior art keywords
power
transistor
period
transformer
controlled
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
JP10148079A
Other languages
Japanese (ja)
Inventor
Sadao Okochi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10148079A priority Critical patent/JPS5625378A/en
Publication of JPS5625378A publication Critical patent/JPS5625378A/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
    • H02M3/338—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 a self-oscillating arrangement

Abstract

PURPOSE:To eliminate the need for a drive circuit and simplify the constitution of a circuit by a method wherein an ON-OFF period of a power transistor is controlled, and the duty cycle of a ratio of the transmitting periods of power to the secondary side of a transformer is controlled. CONSTITUTION:DC power is converted into AC power by the switching action of a power transistor Q2, the AC power is converted into DC power by means of rectifying circuits CR2, CR3, and DC power is supplied to load. When load currents or the output voltage of the rectifying circuits reach fixed value or more, a transistor Q3 for control is turned ON when the power transistor Q2 is turned OFF, an attenuation period of the exciting currents of a transformer T is adjusted, and an ON- OFF period of a transistor Q1 for OFF is controlled, thus controlling an ON-OFF period of the power transistor Q2, then controlling the duty cycle of a ratio of the transmitting periods of power to the secondary side of the transformer T.
JP10148079A 1979-08-09 1979-08-09 Self-excited forward converter Pending JPS5625378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10148079A JPS5625378A (en) 1979-08-09 1979-08-09 Self-excited forward converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10148079A JPS5625378A (en) 1979-08-09 1979-08-09 Self-excited forward converter

Publications (1)

Publication Number Publication Date
JPS5625378A true JPS5625378A (en) 1981-03-11

Family

ID=14301875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10148079A Pending JPS5625378A (en) 1979-08-09 1979-08-09 Self-excited forward converter

Country Status (1)

Country Link
JP (1) JPS5625378A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192189U (en) * 1984-11-22 1986-06-14
JPH0196782U (en) * 1987-12-21 1989-06-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6192189U (en) * 1984-11-22 1986-06-14
JPH0196782U (en) * 1987-12-21 1989-06-27

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