JPS5790722A - Dc power supply circuit - Google Patents

Dc power supply circuit

Info

Publication number
JPS5790722A
JPS5790722A JP55167094A JP16709480A JPS5790722A JP S5790722 A JPS5790722 A JP S5790722A JP 55167094 A JP55167094 A JP 55167094A JP 16709480 A JP16709480 A JP 16709480A JP S5790722 A JPS5790722 A JP S5790722A
Authority
JP
Japan
Prior art keywords
circuit
voltage
power supply
capacitor
voltage detecting
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
JP55167094A
Other languages
Japanese (ja)
Inventor
Mitsuo Yonemori
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP55167094A priority Critical patent/JPS5790722A/en
Publication of JPS5790722A publication Critical patent/JPS5790722A/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To reduce the power consumption ratio of a power supply circuit through which the DC voltage of a low level without using any transformer, by charging a capacitor via a transistor that conducts in the state of saturation only when the instantaneous value of the AC power supply voltage is at a low level. CONSTITUTION:A rectifying circuit 2 that rectifies an AC power supply 1 via a resistance 21 is provided along with a control circuit 3 consisting of a series type transistor TR34, a base resistance 33 and a rectified voltage detecting circuit plus a capacitor 5 which is charged by the output of the circuit 3 via a diode 4. In addition, a load voltage detecting circuit 6 works when the both-end voltage of the capacitor 5 is set at a level higher than the high threshold value and is reset when the both-end voltage is set at a level lower than the low threshold value, respectively. Then the base current of the TR34 in the circuit 3 is by-passed by the rectified voltage detecting circuit and the circuit 6 to cut off the TR34. And the DC voltage is applied to a load 7 from both ends of the capacitor 5.
JP55167094A 1980-11-27 1980-11-27 Dc power supply circuit Pending JPS5790722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55167094A JPS5790722A (en) 1980-11-27 1980-11-27 Dc power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55167094A JPS5790722A (en) 1980-11-27 1980-11-27 Dc power supply circuit

Publications (1)

Publication Number Publication Date
JPS5790722A true JPS5790722A (en) 1982-06-05

Family

ID=15843303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55167094A Pending JPS5790722A (en) 1980-11-27 1980-11-27 Dc power supply circuit

Country Status (1)

Country Link
JP (1) JPS5790722A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7446486B2 (en) 2003-06-10 2008-11-04 Lutron Electronics Co., Ltd. High efficiency off-line linear power supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7446486B2 (en) 2003-06-10 2008-11-04 Lutron Electronics Co., Ltd. High efficiency off-line linear power supply
US7952300B2 (en) 2003-06-10 2011-05-31 Lutron Electronics Co., Inc. High efficiency off-line linear power supply

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