JPS57120132A - Switching power supply circuit - Google Patents

Switching power supply circuit

Info

Publication number
JPS57120132A
JPS57120132A JP579981A JP579981A JPS57120132A JP S57120132 A JPS57120132 A JP S57120132A JP 579981 A JP579981 A JP 579981A JP 579981 A JP579981 A JP 579981A JP S57120132 A JPS57120132 A JP S57120132A
Authority
JP
Japan
Prior art keywords
resistance
input
power supply
terminals
circuit
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
JP579981A
Other languages
Japanese (ja)
Inventor
Sumio Komi
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 JP579981A priority Critical patent/JPS57120132A/en
Publication of JPS57120132A publication Critical patent/JPS57120132A/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

Abstract

PURPOSE:To use a switching signal generating circuit as a voltage controlling circuit, by applying the voltage which series according to the power supply voltage applied to the primary winding of a transformer to the other input of a comparing amplifier. CONSTITUTION:An input power supply 1 is connected between positive and negative input terminals 2 and 3, and at the same time a series circuit of a resistance 5 and a Zener diode 6 is connected between the terminals 2 and 3. The both-end voltage of the diode 6 receives the division of resistance by a resistance 8 to be applied to the reference input of a comparing amplifier 10. An oscillating circuit 11 is connected to the other input of the amplifier 10. The joint of a resistance 7 is changed to the potential point of the terminal 2 from the joint between the resistance 5 and the diode 6. At the same time, the primary winding of a transformer 14 is connected between the terminals 2 and 3, and the output of the secondary winding of the transformer 14 is connected to output terminals 16 and 17 via a rectifying circuit 15.
JP579981A 1981-01-16 1981-01-16 Switching power supply circuit Pending JPS57120132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP579981A JPS57120132A (en) 1981-01-16 1981-01-16 Switching power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP579981A JPS57120132A (en) 1981-01-16 1981-01-16 Switching power supply circuit

Publications (1)

Publication Number Publication Date
JPS57120132A true JPS57120132A (en) 1982-07-27

Family

ID=11621121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP579981A Pending JPS57120132A (en) 1981-01-16 1981-01-16 Switching power supply circuit

Country Status (1)

Country Link
JP (1) JPS57120132A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55122476A (en) * 1979-03-14 1980-09-20 Micron Kiki Kk Dc-dc converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55122476A (en) * 1979-03-14 1980-09-20 Micron Kiki Kk Dc-dc converter

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