JPS5776618A - Switching regulator - Google Patents

Switching regulator

Info

Publication number
JPS5776618A
JPS5776618A JP15227380A JP15227380A JPS5776618A JP S5776618 A JPS5776618 A JP S5776618A JP 15227380 A JP15227380 A JP 15227380A JP 15227380 A JP15227380 A JP 15227380A JP S5776618 A JPS5776618 A JP S5776618A
Authority
JP
Japan
Prior art keywords
voltage
switching element
period
base
drops
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.)
Granted
Application number
JP15227380A
Other languages
Japanese (ja)
Other versions
JPS613182B2 (en
Inventor
Masao Kako
Kunio Ando
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15227380A priority Critical patent/JPS5776618A/en
Publication of JPS5776618A publication Critical patent/JPS5776618A/en
Publication of JPS613182B2 publication Critical patent/JPS613182B2/ja
Granted 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Landscapes

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

Abstract

PURPOSE:To stabilize the operation of a switching regulator even in case of voltage variations which exceed a control range, by specifying the length of the conduction period of a switching element when detecting an AC input voltage dropping rapidly. CONSTITUTION:If an unstabilized DC voltage obtained only by rectifying an AC input voltage applied to a terminal drops rapidly, a voltage at the connection point between resistances 26 and 27 drops below the collector voltage of a transistor (TR) 18 in a normal state, turning on a diode 30. As a result, while the base boltage of a TR 14f drops, the base current increases, so a voltage at the connection point (a) between the collector of the TR14f and the base of a TR13 rises to prolong the on period of the TR13 which truns on a switching element 2, whose on period is then shortened, thereby preventing the switching element from being cut off.
JP15227380A 1980-10-31 1980-10-31 Switching regulator Granted JPS5776618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15227380A JPS5776618A (en) 1980-10-31 1980-10-31 Switching regulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15227380A JPS5776618A (en) 1980-10-31 1980-10-31 Switching regulator

Publications (2)

Publication Number Publication Date
JPS5776618A true JPS5776618A (en) 1982-05-13
JPS613182B2 JPS613182B2 (en) 1986-01-30

Family

ID=15536893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15227380A Granted JPS5776618A (en) 1980-10-31 1980-10-31 Switching regulator

Country Status (1)

Country Link
JP (1) JPS5776618A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62223306A (en) * 1986-03-18 1987-10-01 株式会社　若菜企画 Clothing with display device
JPS62153322U (en) * 1986-03-20 1987-09-29
JPH04131543U (en) * 1991-05-29 1992-12-03 株式会社オー・アール・ケー motorcycle stock lamp

Also Published As

Publication number Publication date
JPS613182B2 (en) 1986-01-30

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