JPS5762774A - Output voltae control circuit - Google Patents

Output voltae control circuit

Info

Publication number
JPS5762774A
JPS5762774A JP13656980A JP13656980A JPS5762774A JP S5762774 A JPS5762774 A JP S5762774A JP 13656980 A JP13656980 A JP 13656980A JP 13656980 A JP13656980 A JP 13656980A JP S5762774 A JPS5762774 A JP S5762774A
Authority
JP
Japan
Prior art keywords
voltage
transistor
proportional
output
vcc
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
JP13656980A
Other languages
Japanese (ja)
Inventor
Yujiro Kasai
Seiya Azuma
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP13656980A priority Critical patent/JPS5762774A/en
Publication of JPS5762774A publication Critical patent/JPS5762774A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion 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
    • H02M3/325Conversion 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
    • H02M3/335Conversion 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
    • H02M3/338Conversion 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 in a self-oscillating arrangement
    • H02M3/3385Conversion 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 in a self-oscillating arrangement with automatic control of output voltage or current

Abstract

PURPOSE:To improve variation in output voltage with a light load, by determining timing to break supply of base current with a voltage that is the sum of a voltage that is proportional to the collector current of the transistor and a voltage that is proportional to the output voltage. CONSTITUTION:A control voltage (VRE+Vcc) which is the sum of a voltage VRE that is proportional to the collector current of a transistor Q1 that is developed in the emitter resistance RE and a voltage Vcc that is proportional to the output voltage developed in a capacitor Cc is obtained, and this control voltage is made to turn on the transistor Q2 and turn off the transistor Q1 when it goes over the base voltage of a transistor Q2. In this arrangement control of the voltage Vcc forcibly pulls out the base current of the transistor Q1 with the transistor Q2 to reduce loss of the transistor Q1 and is able to suppress variation in the output voltage for a light load.
JP13656980A 1980-09-30 1980-09-30 Output voltae control circuit Pending JPS5762774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13656980A JPS5762774A (en) 1980-09-30 1980-09-30 Output voltae control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13656980A JPS5762774A (en) 1980-09-30 1980-09-30 Output voltae control circuit

Publications (1)

Publication Number Publication Date
JPS5762774A true JPS5762774A (en) 1982-04-15

Family

ID=15178313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13656980A Pending JPS5762774A (en) 1980-09-30 1980-09-30 Output voltae control circuit

Country Status (1)

Country Link
JP (1) JPS5762774A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203561A (en) * 1986-02-04 1987-09-08 Fujitsu Ltd Power circuit
JPS62159189U (en) * 1986-03-31 1987-10-09
US4763061A (en) * 1986-05-30 1988-08-09 Braun Aktiengesellschaft Primary switched-mode DC-DC converter with summed input current and input voltage responsive control
EP0346478A1 (en) * 1987-10-29 1989-12-20 Fanuc Ltd. Switching regulator
WO2008001890A1 (en) * 2006-06-30 2008-01-03 Panasonic Electric Works Co., Ltd. Switching power supply apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62203561A (en) * 1986-02-04 1987-09-08 Fujitsu Ltd Power circuit
JPS62159189U (en) * 1986-03-31 1987-10-09
JPH0321194Y2 (en) * 1986-03-31 1991-05-08
US4763061A (en) * 1986-05-30 1988-08-09 Braun Aktiengesellschaft Primary switched-mode DC-DC converter with summed input current and input voltage responsive control
EP0346478A1 (en) * 1987-10-29 1989-12-20 Fanuc Ltd. Switching regulator
US4942508A (en) * 1987-10-29 1990-07-17 Fanuc Ltd Switching regulator
WO2008001890A1 (en) * 2006-06-30 2008-01-03 Panasonic Electric Works Co., Ltd. Switching power supply apparatus
JP4775441B2 (en) * 2006-06-30 2011-09-21 パナソニック電工株式会社 Switching power supply
US8035998B2 (en) 2006-06-30 2011-10-11 Panasonic Electric Works Co., Ltd. Switching power supply

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