JPS56117411A - Protecting circuit of amplifier - Google Patents

Protecting circuit of amplifier

Info

Publication number
JPS56117411A
JPS56117411A JP2200280A JP2200280A JPS56117411A JP S56117411 A JPS56117411 A JP S56117411A JP 2200280 A JP2200280 A JP 2200280A JP 2200280 A JP2200280 A JP 2200280A JP S56117411 A JPS56117411 A JP S56117411A
Authority
JP
Japan
Prior art keywords
line
diode
resistance
serial circuit
partial pressure
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.)
Granted
Application number
JP2200280A
Other languages
Japanese (ja)
Other versions
JPS6158046B2 (en
Inventor
Norio Ishiguro
Masashi Matsui
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP2200280A priority Critical patent/JPS56117411A/en
Publication of JPS56117411A publication Critical patent/JPS56117411A/en
Publication of JPS6158046B2 publication Critical patent/JPS6158046B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Amplifiers (AREA)

Abstract

PURPOSE: To increase the range in which an amplifier works in a normal way, by approximating the protecting line to the ASO line.
CONSTITUTION: A voltage dividing circuit in which the resistances 27, 28 and 29 are connected in series is provided between the power sources +B and -B, and the connection points 30 and 31 among the rsistances are used for the partial pressure output terminals. Tha bases of the transistors 15 and 16 are connected to the partial pressure output terminal 31 via a serial circuit of the resistance 23 and diode 25 plus a serial circuit of the resistance 24 and diode 26. At the same time, the said bases are connected to the partial pressure output terminal 30 via a serial circuit of the resistance 19 and diode 21 plus a serial circuit of the resistance 20 and diode 22, and furthermore connected to the sources -B and +B via the resistances 17 and 18. In such constitution, two folded points are produced to the protecting line C. As a result, the line C can be approximated to the ASO line A more accurately.
COPYRIGHT: (C)1981,JPO&Japio
JP2200280A 1980-02-22 1980-02-22 Protecting circuit of amplifier Granted JPS56117411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2200280A JPS56117411A (en) 1980-02-22 1980-02-22 Protecting circuit of amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2200280A JPS56117411A (en) 1980-02-22 1980-02-22 Protecting circuit of amplifier

Publications (2)

Publication Number Publication Date
JPS56117411A true JPS56117411A (en) 1981-09-14
JPS6158046B2 JPS6158046B2 (en) 1986-12-10

Family

ID=12070792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2200280A Granted JPS56117411A (en) 1980-02-22 1980-02-22 Protecting circuit of amplifier

Country Status (1)

Country Link
JP (1) JPS56117411A (en)

Also Published As

Publication number Publication date
JPS6158046B2 (en) 1986-12-10

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