JPS57203116A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS57203116A
JPS57203116A JP8868981A JP8868981A JPS57203116A JP S57203116 A JPS57203116 A JP S57203116A JP 8868981 A JP8868981 A JP 8868981A JP 8868981 A JP8868981 A JP 8868981A JP S57203116 A JPS57203116 A JP S57203116A
Authority
JP
Japan
Prior art keywords
voltage
resistor
output
constant voltage
amplifier
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
JP8868981A
Other languages
Japanese (ja)
Inventor
Mitsuharu Kato
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP8868981A priority Critical patent/JPS57203116A/en
Publication of JPS57203116A publication Critical patent/JPS57203116A/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
    • G05F1/56—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
    • G05F1/561—Voltage to current converters

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 obtain a constant voltage characteristic with a simple constitution, by exercising feedback control through the use of a differential amplifier so that divided voltages of an output voltage are equal from the use of an offset voltage. CONSTITUTION:An output signal of a differential amplifier 11 having an offset voltage is applied to a gate of a P channel MOS transistor TR13 inserted between a power supply Vcc and a load 12. A resistor 14 is connected between a non-inverting and an inverting input terminals of an amplifier 11, the inverting input terminal is grounded and a resistor 15 is inserted between an output point C of the TR13 and a point B of the non-inverting terminal of the amplifier 11. Thus, a detection voltage which is a voltage division of a constant voltage output can be set to a resistor 14 through the use of feedback operation.
JP8868981A 1981-06-09 1981-06-09 Constant voltage circuit Pending JPS57203116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8868981A JPS57203116A (en) 1981-06-09 1981-06-09 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8868981A JPS57203116A (en) 1981-06-09 1981-06-09 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS57203116A true JPS57203116A (en) 1982-12-13

Family

ID=13949800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8868981A Pending JPS57203116A (en) 1981-06-09 1981-06-09 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS57203116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174922A (en) * 1983-03-25 1984-10-03 Oki Electric Ind Co Ltd Stabilized power supply circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174922A (en) * 1983-03-25 1984-10-03 Oki Electric Ind Co Ltd Stabilized power supply circuit

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