JPS5713527A - Constant voltage generating circuit - Google Patents

Constant voltage generating circuit

Info

Publication number
JPS5713527A
JPS5713527A JP8814780A JP8814780A JPS5713527A JP S5713527 A JPS5713527 A JP S5713527A JP 8814780 A JP8814780 A JP 8814780A JP 8814780 A JP8814780 A JP 8814780A JP S5713527 A JPS5713527 A JP S5713527A
Authority
JP
Japan
Prior art keywords
voltage
varied
trq4
deltav
alpha
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
JP8814780A
Other languages
Japanese (ja)
Inventor
Toshio Ichiyama
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 JP8814780A priority Critical patent/JPS5713527A/en
Publication of JPS5713527A publication Critical patent/JPS5713527A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/24—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
    • G05F3/242—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage
    • G05F3/247—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage producing a voltage or current as a predetermined function of the supply voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To hold voltage in a constant state even if supply voltage is varied, by constituting two transistors TR so that the resistance values are different in supply voltage dependent property, and dividing the resistance. CONSTITUTION:An electric power source Vcc is connected to a series circuit of resistances R1, R2 and TRs Q4, Q5, a connection point I of the resistances R1, R2 is connected to a gate of the TRQ4, also voltage Vcc is connected to a gate of the TRQ5, and output voltage VR is outputted from a connection point II of the TRs Q4, Q5. Voltage of the connection point I is made Va, and when voltage of the electric power source Vcc is varied by DELTAV, the voltage Va is varied by alpha.DELTAV (0<alpha<1). alpha is given by R2/(R1+R2). A resistance portion of the TRQ4 and that of the TRQ5 are varied by following alpha.DELTAV and DELTAV, respectively. Accordingly, when supply voltage has been varied high, a resistance value decreased portion of the TR Q5> a resistance value decreased portion of the TRQ4 is caused in order that voltage VR of the point II is held in a constant state. When supply voltage has been varied low, a resistance value increased portion of the TRQ5> a resistance value increased portion of the TRQ4 is caused, and voltage VR is held in a constant state.
JP8814780A 1980-06-26 1980-06-26 Constant voltage generating circuit Pending JPS5713527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8814780A JPS5713527A (en) 1980-06-26 1980-06-26 Constant voltage generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8814780A JPS5713527A (en) 1980-06-26 1980-06-26 Constant voltage generating circuit

Publications (1)

Publication Number Publication Date
JPS5713527A true JPS5713527A (en) 1982-01-23

Family

ID=13934813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8814780A Pending JPS5713527A (en) 1980-06-26 1980-06-26 Constant voltage generating circuit

Country Status (1)

Country Link
JP (1) JPS5713527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63276106A (en) * 1987-05-07 1988-11-14 Matsushita Electric Ind Co Ltd Voltage generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63276106A (en) * 1987-05-07 1988-11-14 Matsushita Electric Ind Co Ltd Voltage generating circuit

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