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JPS55136871A - Power supply unit - Google Patents

Power supply unit

Info

Publication number
JPS55136871A
JPS55136871A JP4395779A JP4395779A JPS55136871A JP S55136871 A JPS55136871 A JP S55136871A JP 4395779 A JP4395779 A JP 4395779A JP 4395779 A JP4395779 A JP 4395779A JP S55136871 A JPS55136871 A JP S55136871A
Authority
JP
Japan
Prior art keywords
transformer
load
secondary winding
power supply
voltage
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
JP4395779A
Other languages
Japanese (ja)
Inventor
Akira Kawaguchi
Ryuichi Yanagisawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4395779A priority Critical patent/JPS55136871A/en
Publication of JPS55136871A publication Critical patent/JPS55136871A/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

Landscapes

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

Abstract

PURPOSE:To compensate for voltage flactuation by the use of a constant-voltage power supply unit consisting of the first transformer and the second transformer wherein the latter is connected to the secondary winding of the former via a switching device, allowing the controlling element to be of reasonablly small capacity. CONSTITUTION:The primary winding 24 of a transformer 21 is connected to an AC power supply, and the output voltage of the secondary winding 23 being rectified by rectifiers 25-28 is fed to the primary winding 32 of a transformer 31 via controlling transistors 29 and 30. The secondary winding 22 of the transformer 21 and the secondary winding 33 of the transformer 31 being connected in series are connected to a load 9 via rectifiers 34-37 and a filter. Output voltage of the load 9 being fed to a pulse-width controlling circuit 41 controls switching time of the controlling transistors 29 and 30. Thereby making the control element perform only the compensating of the input voltage and load flactuations, its capacity is allowed to be reasonablly small compared with the load capacity.
JP4395779A 1979-04-11 1979-04-11 Power supply unit Pending JPS55136871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4395779A JPS55136871A (en) 1979-04-11 1979-04-11 Power supply unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4395779A JPS55136871A (en) 1979-04-11 1979-04-11 Power supply unit

Publications (1)

Publication Number Publication Date
JPS55136871A true JPS55136871A (en) 1980-10-25

Family

ID=12678174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4395779A Pending JPS55136871A (en) 1979-04-11 1979-04-11 Power supply unit

Country Status (1)

Country Link
JP (1) JPS55136871A (en)

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