JPS56111919A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS56111919A
JPS56111919A JP1454080A JP1454080A JPS56111919A JP S56111919 A JPS56111919 A JP S56111919A JP 1454080 A JP1454080 A JP 1454080A JP 1454080 A JP1454080 A JP 1454080A JP S56111919 A JPS56111919 A JP S56111919A
Authority
JP
Japan
Prior art keywords
voltage
mosfet1
supply voltage
capacitors
fluctuation
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
JP1454080A
Other languages
Japanese (ja)
Inventor
Junichi Tabata
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP1454080A priority Critical patent/JPS56111919A/en
Publication of JPS56111919A publication Critical patent/JPS56111919A/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 realize a steady operation with a low level of power comsumption and regardless of a fluctuation of the power supply voltage, by controlling the threshold voltage levels of two MOSFETs that form an input gate of the voltage comparator circuit at difference values. CONSTITUTION:The voltage comparator circuit 30 includes the MOSFET1 and 2 used as the voltage input gates plus the current Miller circuit 31 consisting of MOSFET3 and 4 that are used as the active loads circuits. The gates of the MOSFET1 and 2 are connected to the connection point A between the capacitors 7 and 8 connected in parallel to the load 6 as wll as to the connection point B of the MOS5 for voltage drop. In this case, the supply voltage VSL of the load 6 becomes as shown by an equation (where C7 and C8 show the electrostatic capacities of capacitors 7 and 8, and VTP1 and VTP2 show the threshold voltage levels of the MOSFET1 and 2). In such way, a steady operation is secured regardless of a fluctuation of the power supply voltage.
JP1454080A 1980-02-08 1980-02-08 Constant voltage circuit Pending JPS56111919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1454080A JPS56111919A (en) 1980-02-08 1980-02-08 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1454080A JPS56111919A (en) 1980-02-08 1980-02-08 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS56111919A true JPS56111919A (en) 1981-09-04

Family

ID=11863978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1454080A Pending JPS56111919A (en) 1980-02-08 1980-02-08 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS56111919A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522622U (en) * 1991-08-20 1993-03-23 株式会社旭ダンケ Civil engineering concrete block
CN110442180A (en) * 2018-05-02 2019-11-12 亚德诺半导体无限责任公司 Power-cyclical voltage reference

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132753A (en) * 1978-04-05 1979-10-16 Hitachi Ltd Referential voltage generator and its application

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132753A (en) * 1978-04-05 1979-10-16 Hitachi Ltd Referential voltage generator and its application

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522622U (en) * 1991-08-20 1993-03-23 株式会社旭ダンケ Civil engineering concrete block
CN110442180A (en) * 2018-05-02 2019-11-12 亚德诺半导体无限责任公司 Power-cyclical voltage reference

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