JPS55144776A - Power source - Google Patents

Power source

Info

Publication number
JPS55144776A
JPS55144776A JP5364279A JP5364279A JPS55144776A JP S55144776 A JPS55144776 A JP S55144776A JP 5364279 A JP5364279 A JP 5364279A JP 5364279 A JP5364279 A JP 5364279A JP S55144776 A JPS55144776 A JP S55144776A
Authority
JP
Japan
Prior art keywords
voltage
transformer
voltage detection
set point
secondary 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
JP5364279A
Other languages
Japanese (ja)
Inventor
Kazuo Takahashi
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.)
Usac Electronic Ind Co Ltd
Original Assignee
Usac Electronic Ind 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 Usac Electronic Ind Co Ltd filed Critical Usac Electronic Ind Co Ltd
Priority to JP5364279A priority Critical patent/JPS55144776A/en
Publication of JPS55144776A publication Critical patent/JPS55144776A/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
    • H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs

Landscapes

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

Abstract

PURPOSE:To nearly maintain each voltage at plural output terminals at a set point despite of input variation by comparing the voltage of a secondary winding for voltage detection independently provided with a transformer with the set point wherein a power switching section is controlled in accordance with the voltage deviation. CONSTITUTION:A secondary winding 7-s for voltage detection which delivers no load current is independently provided with a transformer 5 and the voltage is converted into direct current by a voltage detection circuit 10 to compare with a set point. A power switching section 3 is controlled by a switching control section 4 which works by the voltage deviation originated in the above comparison value. The voltage across both terminals of the winding 7-s for voltage detection is directly proportional to the magnitude of magnetic flux variation of the transformer 5 as no load current is delivered from the secondary winding for voltage detection 7-s. The magnitude of magnetic flux variation of the transformer 5 is a function of the sum total of a voltage value of Ac power source 1 and load current. Therefore the output voltage at output terminals OUT1 or OUTn will be the same as a reference value.
JP5364279A 1979-05-01 1979-05-01 Power source Pending JPS55144776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5364279A JPS55144776A (en) 1979-05-01 1979-05-01 Power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5364279A JPS55144776A (en) 1979-05-01 1979-05-01 Power source

Publications (1)

Publication Number Publication Date
JPS55144776A true JPS55144776A (en) 1980-11-11

Family

ID=12948548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5364279A Pending JPS55144776A (en) 1979-05-01 1979-05-01 Power source

Country Status (1)

Country Link
JP (1) JPS55144776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6351587U (en) * 1986-09-19 1988-04-07
CN112162166A (en) * 2020-09-25 2021-01-01 珠海智融科技有限公司 USB charging port no-load detection circuit and detection method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336624A (en) * 1977-05-30 1978-04-05 Hitachi Ltd Invertor-type dc to dc convertor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5336624A (en) * 1977-05-30 1978-04-05 Hitachi Ltd Invertor-type dc to dc convertor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6351587U (en) * 1986-09-19 1988-04-07
CN112162166A (en) * 2020-09-25 2021-01-01 珠海智融科技有限公司 USB charging port no-load detection circuit and detection method thereof
CN112162166B (en) * 2020-09-25 2022-02-25 珠海智融科技股份有限公司 USB charging port no-load detection circuit and detection method thereof

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