JPS57204928A - Stabilized power supply circuit - Google Patents

Stabilized power supply circuit

Info

Publication number
JPS57204928A
JPS57204928A JP9005281A JP9005281A JPS57204928A JP S57204928 A JPS57204928 A JP S57204928A JP 9005281 A JP9005281 A JP 9005281A JP 9005281 A JP9005281 A JP 9005281A JP S57204928 A JPS57204928 A JP S57204928A
Authority
JP
Japan
Prior art keywords
current
supplied
load
output
switching regulator
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
JP9005281A
Other languages
Japanese (ja)
Inventor
Shinji Kaneko
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP9005281A priority Critical patent/JPS57204928A/en
Publication of JPS57204928A publication Critical patent/JPS57204928A/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
    • H02M3/02—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

Landscapes

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

Abstract

PURPOSE:To reduce the power consumption and improve the efficiency, by making the current supplied from a series regulator to a load constant and supplying most of the load current by the output current from a switching regulator. CONSTITUTION:The output side of a switching regulator 1 is connected to an output terminal 2. The output side of a series regulator 3 is connected to the output terminal 2 through a low resistor 4 for current detection. The output terminal 2 is grounded through a load RL. In this case, a current I1 from the switching regulator 1 and a current I2 from the series regulator 2 are supplied to the load RL, and a load voltage, namely, an output voltage becomes Vo. A voltage obtained between both ends of the low resistor 4 is supplied to the input side of a comparator 5. A signal corresponding to the voltage supplied to the input side is outputted from the output side of the comparator 5 and is supplied as a control signal to the switching regulator 1.
JP9005281A 1981-06-11 1981-06-11 Stabilized power supply circuit Pending JPS57204928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9005281A JPS57204928A (en) 1981-06-11 1981-06-11 Stabilized power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9005281A JPS57204928A (en) 1981-06-11 1981-06-11 Stabilized power supply circuit

Publications (1)

Publication Number Publication Date
JPS57204928A true JPS57204928A (en) 1982-12-15

Family

ID=13987821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9005281A Pending JPS57204928A (en) 1981-06-11 1981-06-11 Stabilized power supply circuit

Country Status (1)

Country Link
JP (1) JPS57204928A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581694A (en) * 1984-07-05 1986-04-08 Gte Business Communications Systems Inc. Inverter using parallel connected series pre-regulator and a synchronized switch
US5034676A (en) * 1990-01-12 1991-07-23 Kinzalow Richard L Direct current power supply circuit having automatic linear and switching modes
WO2006043707A1 (en) * 2004-10-22 2006-04-27 Ricoh Company, Ltd. A constant voltage power supply circuit
JP2006158193A (en) * 2004-11-18 2006-06-15 Matsushita Electric Ind Co Ltd Switching regulator/amplifier with high efficiency and high slewrate

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581694A (en) * 1984-07-05 1986-04-08 Gte Business Communications Systems Inc. Inverter using parallel connected series pre-regulator and a synchronized switch
US5034676A (en) * 1990-01-12 1991-07-23 Kinzalow Richard L Direct current power supply circuit having automatic linear and switching modes
WO2006043707A1 (en) * 2004-10-22 2006-04-27 Ricoh Company, Ltd. A constant voltage power supply circuit
CN100394661C (en) * 2004-10-22 2008-06-11 株式会社理光 A constant voltage power supply circuit
US7429851B2 (en) 2004-10-22 2008-09-30 Ricoh Company, Ltd. Constant voltage power supply circuit
KR100868714B1 (en) * 2004-10-22 2008-11-13 가부시키가이샤 리코 A constant voltage power supply circuit
JP2006158193A (en) * 2004-11-18 2006-06-15 Matsushita Electric Ind Co Ltd Switching regulator/amplifier with high efficiency and high slewrate

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