JPS57120134A - Switch circuit - Google Patents

Switch circuit

Info

Publication number
JPS57120134A
JPS57120134A JP56006074A JP607481A JPS57120134A JP S57120134 A JPS57120134 A JP S57120134A JP 56006074 A JP56006074 A JP 56006074A JP 607481 A JP607481 A JP 607481A JP S57120134 A JPS57120134 A JP S57120134A
Authority
JP
Japan
Prior art keywords
current
electric power
winding
additional winding
trq2
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
JP56006074A
Other languages
Japanese (ja)
Inventor
Yoichi Ueki
Tsunetomo Fukutome
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 JP56006074A priority Critical patent/JPS57120134A/en
Publication of JPS57120134A publication Critical patent/JPS57120134A/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
    • H02M3/33569—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 having several active switching elements

Landscapes

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

Abstract

PURPOSE:To save the driving electric power supplied from an input power supply for a single transistor electric power converting circuit, by supplying a part of the driving electric power of an input switch for prevention of rush current from the transient electric power which is generated to an additional winding. CONSTITUTION:When a transistor (TR)Q1 conducts, a current 11 flows to the primary winding 1 of a transformer T2. A driving current 12 to keep a TRQ2 conductive is furnished by a current 14 which is supplied from the DC voltage V1 via a diode D2. When the TRQ1 is prevented, the current 11 flowing to the winding 1 of the T2 is cut off. In this case, the transient voltage caused in an additional winding II flows an additional winding current 13 via a rectifying circuit consisting of a diode D3 and a capacitor C3. Accordingly, a part of the current 12 of the TRQ2 is furnished by the current 13 and also by the current 12 given from a power supply.
JP56006074A 1981-01-19 1981-01-19 Switch circuit Pending JPS57120134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56006074A JPS57120134A (en) 1981-01-19 1981-01-19 Switch circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56006074A JPS57120134A (en) 1981-01-19 1981-01-19 Switch circuit

Publications (1)

Publication Number Publication Date
JPS57120134A true JPS57120134A (en) 1982-07-27

Family

ID=11628421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56006074A Pending JPS57120134A (en) 1981-01-19 1981-01-19 Switch circuit

Country Status (1)

Country Link
JP (1) JPS57120134A (en)

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