JPS56105516A - Direct current regulated power supply - Google Patents

Direct current regulated power supply

Info

Publication number
JPS56105516A
JPS56105516A JP740880A JP740880A JPS56105516A JP S56105516 A JPS56105516 A JP S56105516A JP 740880 A JP740880 A JP 740880A JP 740880 A JP740880 A JP 740880A JP S56105516 A JPS56105516 A JP S56105516A
Authority
JP
Japan
Prior art keywords
output
voltage
terminal
predetermined value
output current
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
JP740880A
Other languages
Japanese (ja)
Other versions
JPS6018186B2 (en
Inventor
Hirokazu Sawara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP740880A priority Critical patent/JPS6018186B2/en
Publication of JPS56105516A publication Critical patent/JPS56105516A/en
Publication of JPS6018186B2 publication Critical patent/JPS6018186B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/563—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To reduce the size and save electric power of a circuit part by operating the device as a series regulator when the output current is below a predetermined value and as a switching regulator when it is above the predetermined value. CONSTITUTION:When the output current at an output terminal 6 is small, a constant DC voltage is inputted to an error amplifier circuit 12 and the signal of the difference between said voltage and the voltage of the terminal 6 is outputted from the circuit 12, by the output whereof a control transistor Tr2 is so controlled as to be applied with negative feedback, whereby the voltage of the output terminal 6 is maintained constant. Here, if the output current in the output terminal 6 is large, an oscillator 9 oscillates, and generates a triangle wave in the output of an integrating circuit, the output whereof is superposed by the output of a reference voltage 11. This superposed voltage and the output of the terminal 6 are compared, thereby causing the Tr2 to make switching operation. Thereby, the device is operated as a series regulator or a switching regulator depending upon whether the output current is below or above the predetermined value.
JP740880A 1980-01-26 1980-01-26 DC stabilized power supply Expired JPS6018186B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP740880A JPS6018186B2 (en) 1980-01-26 1980-01-26 DC stabilized power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP740880A JPS6018186B2 (en) 1980-01-26 1980-01-26 DC stabilized power supply

Publications (2)

Publication Number Publication Date
JPS56105516A true JPS56105516A (en) 1981-08-22
JPS6018186B2 JPS6018186B2 (en) 1985-05-09

Family

ID=11665035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP740880A Expired JPS6018186B2 (en) 1980-01-26 1980-01-26 DC stabilized power supply

Country Status (1)

Country Link
JP (1) JPS6018186B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456990A2 (en) * 1990-05-12 1991-11-21 Daimler-Benz Aktiengesellschaft Device to supply power to a computer system in a motor vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61152087U (en) * 1985-03-10 1986-09-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0456990A2 (en) * 1990-05-12 1991-11-21 Daimler-Benz Aktiengesellschaft Device to supply power to a computer system in a motor vehicle

Also Published As

Publication number Publication date
JPS6018186B2 (en) 1985-05-09

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