JPS57143622A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS57143622A
JPS57143622A JP2970481A JP2970481A JPS57143622A JP S57143622 A JPS57143622 A JP S57143622A JP 2970481 A JP2970481 A JP 2970481A JP 2970481 A JP2970481 A JP 2970481A JP S57143622 A JPS57143622 A JP S57143622A
Authority
JP
Japan
Prior art keywords
voltage
output
diode
resistance
winding
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
JP2970481A
Other languages
Japanese (ja)
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 JP2970481A priority Critical patent/JPS57143622A/en
Publication of JPS57143622A publication Critical patent/JPS57143622A/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 obtain a DC voltage stable to variations of an input voltage and/or a load by cutting off the base current of a transistor (TR) connected to the primary winding of a transformer, and providing a bias circuit which rectifies the output of the other winding. CONSTITUTION:To the output side of a rectifying and smoothing circuit 5, a voltage detecting circuit composed of a Zener diode 71 and a resistance 72 is connected, thereby an LED73 is turned on, and the LED73 and a phototransistor TR74 are coupled optically to form a control circuit 7. The collector of the TR4 is connected to the base of a TR2, and the emitter is connected to one terminal of a resistance 44. This resistance 44, a capacitor 43, and a diode 42 constitute a bias circuit 45. Consequently, the output of a winding 32 is recrified by the diode 42 to obtain a negative voltage at the diode-42 side of a capacitor 43, and this voltage is applied to the emitter of the TR4. If either an input voltage or an output voltage rises, the TR2 is turned off to shorted the turn-of time of the TR2, stabilizing the output voltage.
JP2970481A 1981-03-02 1981-03-02 Switching regulator Pending JPS57143622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2970481A JPS57143622A (en) 1981-03-02 1981-03-02 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2970481A JPS57143622A (en) 1981-03-02 1981-03-02 Switching regulator

Publications (1)

Publication Number Publication Date
JPS57143622A true JPS57143622A (en) 1982-09-04

Family

ID=12283491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2970481A Pending JPS57143622A (en) 1981-03-02 1981-03-02 Switching regulator

Country Status (1)

Country Link
JP (1) JPS57143622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300339A (en) * 1983-01-28 1984-08-16 Nedap Nv High voltage power supply - has accurate stabilisation and short circuit protection
JPH0799723A (en) * 1993-09-28 1995-04-11 Okamura Kenkyusho:Kk Power capacitance device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8300339A (en) * 1983-01-28 1984-08-16 Nedap Nv High voltage power supply - has accurate stabilisation and short circuit protection
JPH0799723A (en) * 1993-09-28 1995-04-11 Okamura Kenkyusho:Kk Power capacitance device

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