JPS57114917A - Constant voltage power supply circuit - Google Patents

Constant voltage power supply circuit

Info

Publication number
JPS57114917A
JPS57114917A JP235581A JP235581A JPS57114917A JP S57114917 A JPS57114917 A JP S57114917A JP 235581 A JP235581 A JP 235581A JP 235581 A JP235581 A JP 235581A JP S57114917 A JPS57114917 A JP S57114917A
Authority
JP
Japan
Prior art keywords
power supply
supply circuit
resistor
capacitor
constant voltage
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
JP235581A
Other languages
Japanese (ja)
Inventor
Yoshihiko Niimura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP235581A priority Critical patent/JPS57114917A/en
Publication of JPS57114917A publication Critical patent/JPS57114917A/en
Pending 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
    • G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown

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)

Abstract

PURPOSE:To give a delay for a required time to a rise of an output voltage, by providing a switchig element controlled with a time constant through a resistor and a capacitor, between a resistor for voltage setting and ground, in a constant voltage power supply circuit used for an audio equipment. CONSTITUTION:A resistor (R)2 is connected between an output terminal OUT of a constant voltage source 1 having an input terminal IN and a voltage set terminal REF, and a switching transistor (TR)6 is inserted between the terminal REF and ground via a R3. The collector of the TR6 is connected to the R2 and the emitter is grounded. A capacitor (C)7 is connected between the base of the TR6 and ground, and a R8 is connected between the base and the terminal OUT. Thus, the rise of an output voltage can be kept as the Vref without using a large capacity of capacitor, by controlling the switching time of the TR6 with the time constant of the R8 and C7.
JP235581A 1981-01-07 1981-01-07 Constant voltage power supply circuit Pending JPS57114917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP235581A JPS57114917A (en) 1981-01-07 1981-01-07 Constant voltage power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP235581A JPS57114917A (en) 1981-01-07 1981-01-07 Constant voltage power supply circuit

Publications (1)

Publication Number Publication Date
JPS57114917A true JPS57114917A (en) 1982-07-17

Family

ID=11526957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP235581A Pending JPS57114917A (en) 1981-01-07 1981-01-07 Constant voltage power supply circuit

Country Status (1)

Country Link
JP (1) JPS57114917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990072377A (en) * 1998-02-04 1999-09-27 이토 기요시 Voltage Regulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990072377A (en) * 1998-02-04 1999-09-27 이토 기요시 Voltage Regulator
KR100700406B1 (en) * 1998-02-04 2007-03-28 세이코 인스트루 가부시키가이샤 Voltage Regulator

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