JPS57143623A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS57143623A
JPS57143623A JP2970581A JP2970581A JPS57143623A JP S57143623 A JPS57143623 A JP S57143623A JP 2970581 A JP2970581 A JP 2970581A JP 2970581 A JP2970581 A JP 2970581A JP S57143623 A JPS57143623 A JP S57143623A
Authority
JP
Japan
Prior art keywords
base
circuit
photocoupler
phototransistor
emitter
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.)
Granted
Application number
JP2970581A
Other languages
Japanese (ja)
Other versions
JPS6327948B2 (en
Inventor
Takeshi Yamada
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP2970581A priority Critical patent/JPS57143623A/en
Publication of JPS57143623A publication Critical patent/JPS57143623A/en
Publication of JPS6327948B2 publication Critical patent/JPS6327948B2/ja
Granted 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 obtain a stable DC output voltage by cutting off the base current of a transistor (TR) connected to the primary winding of a transformer, and connecting a differentiating circuit between the base of the TR and that of a phototransistor for positive feedback. CONSTITUTION:An LED77 couples optically with a phototransistor TR78 with a base terminal to constitute a photocoupler. Then, a voltage detecting circuit composed of a TR71, a Zener diode 72, and resistances 73-76, and said photocoupler constitute a control circuit. The collector and emitter of the TR78 are connected to the base and emitter of a TR2 respectively. Further, a differentiating circuit 9 for positive feedback is connected between the base of the TR78 and that of the TR2 by a capacitor 91 and a resistance 92. Thus, the simple circuit efficiently obtain a DC output voltage stable to the variation of an input voltage and/or a load.
JP2970581A 1981-03-02 1981-03-02 Switching regulator Granted JPS57143623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2970581A JPS57143623A (en) 1981-03-02 1981-03-02 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2970581A JPS57143623A (en) 1981-03-02 1981-03-02 Switching regulator

Publications (2)

Publication Number Publication Date
JPS57143623A true JPS57143623A (en) 1982-09-04
JPS6327948B2 JPS6327948B2 (en) 1988-06-06

Family

ID=12283517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2970581A Granted JPS57143623A (en) 1981-03-02 1981-03-02 Switching regulator

Country Status (1)

Country Link
JP (1) JPS57143623A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737898A (en) * 1987-02-13 1988-04-12 Northern Telecom Limited Single-ended self-oscillating, DC-DC converter with regulation and inhibit control
EP0477596A2 (en) * 1990-09-26 1992-04-01 Siemens Aktiengesellschaft Österreich DC flyback converter circuit
JPH04102256U (en) * 1991-02-14 1992-09-03 宏央 浜田 Caps for plastic containers for refueling, etc.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737898A (en) * 1987-02-13 1988-04-12 Northern Telecom Limited Single-ended self-oscillating, DC-DC converter with regulation and inhibit control
EP0477596A2 (en) * 1990-09-26 1992-04-01 Siemens Aktiengesellschaft Österreich DC flyback converter circuit
JPH04102256U (en) * 1991-02-14 1992-09-03 宏央 浜田 Caps for plastic containers for refueling, etc.

Also Published As

Publication number Publication date
JPS6327948B2 (en) 1988-06-06

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