JPS5520051A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5520051A
JPS5520051A JP9283878A JP9283878A JPS5520051A JP S5520051 A JPS5520051 A JP S5520051A JP 9283878 A JP9283878 A JP 9283878A JP 9283878 A JP9283878 A JP 9283878A JP S5520051 A JPS5520051 A JP S5520051A
Authority
JP
Japan
Prior art keywords
terminal
input terminal
amplifier
diodes
noninverse
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
JP9283878A
Other languages
Japanese (ja)
Inventor
Yasuhiro Ito
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP9283878A priority Critical patent/JPS5520051A/en
Publication of JPS5520051A publication Critical patent/JPS5520051A/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
    • H03F1/52—Circuit arrangements for protecting such amplifiers

Landscapes

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

Abstract

PURPOSE:To prevent the reduction of the input impedance for the noninverse input terminal by inserting the 1st and 2nd diodes which are connected in opposite polarity to each other between the noninverse terminal and the output terminal of the operational amplifier, and thus to secure protection to the overinput with a simple circuit. CONSTITUTION:The signals supplied from signal input terminal 5 are supplied to the noninverse input terminal of operational amplifier 4 via input resistance 1, and the output of amplifier 4 is applied to the inverse input terminal of amplifier 4 as well as to output terminal 6. Then 1st and 2nd diodes 2 and 3 connected to each other in the opposite polarity are inserted between the noninverse input terminal and terminal 6 of amplifier 4, and the overlap voltage is made identical between diodes 2 and 3. Thus the voltage application is avoided to diode 3, and the signal applied to input terminal 5 is delivered to terminal 6 with no effect of diodes 2 and 3. In case the overinput is applied, the voltage of the noninverse input terminal of amplifier 4 is set lower than the voltage obtained by applying the forward voltage of diodes 2 and 3 to the saturation voltage to secure the protection to the overinput.
JP9283878A 1978-07-29 1978-07-29 Amplifier Pending JPS5520051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9283878A JPS5520051A (en) 1978-07-29 1978-07-29 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9283878A JPS5520051A (en) 1978-07-29 1978-07-29 Amplifier

Publications (1)

Publication Number Publication Date
JPS5520051A true JPS5520051A (en) 1980-02-13

Family

ID=14065563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9283878A Pending JPS5520051A (en) 1978-07-29 1978-07-29 Amplifier

Country Status (1)

Country Link
JP (1) JPS5520051A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1304886A1 (en) * 2001-10-10 2003-04-23 Deutsche Thomson-Brandt Gmbh Saturation suppression of CRT output amplifiers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1304886A1 (en) * 2001-10-10 2003-04-23 Deutsche Thomson-Brandt Gmbh Saturation suppression of CRT output amplifiers
US6703802B2 (en) 2001-10-10 2004-03-09 Thomson Licensing S.A. Saturation suppression of CRT output amplifiers

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