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JPS57157316A - Switching power supply circuit - Google Patents

Switching power supply circuit

Info

Publication number
JPS57157316A
JPS57157316A JP4331781A JP4331781A JPS57157316A JP S57157316 A JPS57157316 A JP S57157316A JP 4331781 A JP4331781 A JP 4331781A JP 4331781 A JP4331781 A JP 4331781A JP S57157316 A JPS57157316 A JP S57157316A
Authority
JP
Japan
Prior art keywords
power supply
capacitor
supply circuit
charged
switching power
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
JP4331781A
Other languages
Japanese (ja)
Inventor
Kiyonobu Hayazaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4331781A priority Critical patent/JPS57157316A/en
Publication of JPS57157316A publication Critical patent/JPS57157316A/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
    • H02M3/33538—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 of the forward type

Landscapes

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

Abstract

PURPOSE:To achieve a switching power supply with small size and high performance through a simple constitution, by using a charge preparatorily charged to a small size and large capacitance of capacitor as a starting power supply, in a switching power supply having a self-generating auxiliary power supply. CONSTITUTION:A capacitor 4 is charged with an input voltage between input terminals 1a and 1b, but a transistor 15 is not operated because no 2nd output of a transformer 8 is presented. When switches 7a and 7b are turned on, the charge in the capacitor 4 gives a bias to a control circuit 19 and a converter is operative. Then, the power supply circuit keeps normal operation. When the output voltage of the auxiliary power supply section is taken greater than a clamp voltage of a diode 3, the capacitor 4 can always be charged. In this case, even if the switches 7a and 7b are turned off, the power supply circuit keeps the operation, and the operation control of this power supply circuit can be made by the gate switching of a driving circuit 18.
JP4331781A 1981-03-25 1981-03-25 Switching power supply circuit Pending JPS57157316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4331781A JPS57157316A (en) 1981-03-25 1981-03-25 Switching power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4331781A JPS57157316A (en) 1981-03-25 1981-03-25 Switching power supply circuit

Publications (1)

Publication Number Publication Date
JPS57157316A true JPS57157316A (en) 1982-09-28

Family

ID=12660424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4331781A Pending JPS57157316A (en) 1981-03-25 1981-03-25 Switching power supply circuit

Country Status (1)

Country Link
JP (1) JPS57157316A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001499A (en) * 2012-11-20 2013-03-27 常州能动电子科技有限公司 Medium-power high-pressure input power supply

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145887A (en) * 1979-03-05 1980-11-13 Leo Bengt Tripod arm

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145887A (en) * 1979-03-05 1980-11-13 Leo Bengt Tripod arm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001499A (en) * 2012-11-20 2013-03-27 常州能动电子科技有限公司 Medium-power high-pressure input power supply

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