JPS55107306A - Operational amplifier - Google Patents

Operational amplifier

Info

Publication number
JPS55107306A
JPS55107306A JP1358279A JP1358279A JPS55107306A JP S55107306 A JPS55107306 A JP S55107306A JP 1358279 A JP1358279 A JP 1358279A JP 1358279 A JP1358279 A JP 1358279A JP S55107306 A JPS55107306 A JP S55107306A
Authority
JP
Japan
Prior art keywords
power supply
diode
operational amplifier
zener
diodes
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
JP1358279A
Other languages
Japanese (ja)
Inventor
Hitoshi Nishimura
Yoriyasu Takeguchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1358279A priority Critical patent/JPS55107306A/en
Publication of JPS55107306A publication Critical patent/JPS55107306A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To enable to make stable operation simply with a single power supply, by connecting two Zener diodes in series with the same direction, and connecting the cathode of the first diode to the positive power supply and the anode of the second diode to the negative power supply. CONSTITUTION:The single power supply 7 is split with the Zener diodes 9, 10 connected in series to the same direction. Further, the cathode side of the Zener diode 9 is taken as the positive power supply to feed power supply to each operating section from the input adjuster 1 to the drive circuit 5. Moreover, the anode of the Zener diode 10 is connected to the negative power supply of the operational amplifier used for the logarithmic amplifier 2 and the adder 3 and connected to the ground side of the input adjuster 1, A/D converter 4, and drive circuit 5. Thus, the operational amplifier operates by taking the middle point of the Zener diodes 9, 10 as the center. As the diodes 9, 10, when the voltage of 5.6-6.2 volts in which the operating resistance and temperature coefficient are excellent is used, stable operation can be obtained to voltage and temperature variation.
JP1358279A 1979-02-08 1979-02-08 Operational amplifier Pending JPS55107306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1358279A JPS55107306A (en) 1979-02-08 1979-02-08 Operational amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1358279A JPS55107306A (en) 1979-02-08 1979-02-08 Operational amplifier

Publications (1)

Publication Number Publication Date
JPS55107306A true JPS55107306A (en) 1980-08-18

Family

ID=11837162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1358279A Pending JPS55107306A (en) 1979-02-08 1979-02-08 Operational amplifier

Country Status (1)

Country Link
JP (1) JPS55107306A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175353U (en) * 1988-05-26 1989-12-13
JP2007249384A (en) * 2006-03-14 2007-09-27 Ricoh Co Ltd Semiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01175353U (en) * 1988-05-26 1989-12-13
JP2007249384A (en) * 2006-03-14 2007-09-27 Ricoh Co Ltd Semiconductor device

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