JPS57150012A - Switching power supply - Google Patents

Switching power supply

Info

Publication number
JPS57150012A
JPS57150012A JP3433581A JP3433581A JPS57150012A JP S57150012 A JPS57150012 A JP S57150012A JP 3433581 A JP3433581 A JP 3433581A JP 3433581 A JP3433581 A JP 3433581A JP S57150012 A JPS57150012 A JP S57150012A
Authority
JP
Japan
Prior art keywords
output side
circuit
starting
power supply
time
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
JP3433581A
Other languages
Japanese (ja)
Inventor
Akio Koizumi
Masami Shirakawa
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP3433581A priority Critical patent/JPS57150012A/en
Publication of JPS57150012A publication Critical patent/JPS57150012A/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

Landscapes

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

Abstract

PURPOSE:To avoid power loss and the generation of heat to ensure an assured starting action, by switching a means that supplies the power supply voltage of a switching control means at the starting time and the steady time after starting. CONSTITUTION:A smoothing capacitor 4 is connected to the output side of a rectifying circuit 3, and a transistor TR5 which is turned on in the starting time is provided at the output side of the capacitor 4. The base of the TR5 is connected to the plus of the output side of the circuit 3 via a resistor 6. At the same time, a collector is connected to the plus of the output side of the circuit 3 with the emitter connected to the collector of a TR8 that forms a differential amplifier along with a TR7. The base of the TR8 is connected to a joint P via a resistor 14 and at the same time to the minus of the output side of the circuit 3 via a constant voltage element, e.g., a Zener diode 15.
JP3433581A 1981-03-10 1981-03-10 Switching power supply Pending JPS57150012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3433581A JPS57150012A (en) 1981-03-10 1981-03-10 Switching power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3433581A JPS57150012A (en) 1981-03-10 1981-03-10 Switching power supply

Publications (1)

Publication Number Publication Date
JPS57150012A true JPS57150012A (en) 1982-09-16

Family

ID=12411263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3433581A Pending JPS57150012A (en) 1981-03-10 1981-03-10 Switching power supply

Country Status (1)

Country Link
JP (1) JPS57150012A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301386A2 (en) * 1987-07-30 1989-02-01 Siemens Nixdorf Informationssysteme Aktiengesellschaft Switching power supply
EP0393280A2 (en) * 1989-04-20 1990-10-24 International Control Automation Finance S.A. Power supplies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301386A2 (en) * 1987-07-30 1989-02-01 Siemens Nixdorf Informationssysteme Aktiengesellschaft Switching power supply
EP0393280A2 (en) * 1989-04-20 1990-10-24 International Control Automation Finance S.A. Power supplies

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