JPS5757008A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5757008A
JPS5757008A JP56120326A JP12032681A JPS5757008A JP S5757008 A JPS5757008 A JP S5757008A JP 56120326 A JP56120326 A JP 56120326A JP 12032681 A JP12032681 A JP 12032681A JP S5757008 A JPS5757008 A JP S5757008A
Authority
JP
Japan
Prior art keywords
emitter
split
resistance
input stage
base
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
JP56120326A
Other languages
Japanese (ja)
Inventor
Fumio Hori
Seiji Kumaki
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 JP56120326A priority Critical patent/JPS5757008A/en
Publication of JPS5757008A publication Critical patent/JPS5757008A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To improve stability and to reduce the noise, by using an emitter-grounded transistor in the input stage and setting the split resistance, which is provided to feed back a part of the collector output to the base, and the emitter resistance to a small value and a large value respectively.
CONSTITUTION: An emitter-grounded transistor (TR) is used as a TR5 constituting the amplifying circuit in the input stage of an amplifier 1, and a part of the collector output of the TR5 is divided by split resistances R9 and R10 for feedback connected between an output terminal 3 and the earth. The circuit is so constituted that this divided voltage is fed back to the base of the TR5, and an emitter resistance R8 of the TR5 is set to a large value, and split resistances R9 and R10 for feedback are set to small values.
COPYRIGHT: (C)1982,JPO&Japio
JP56120326A 1981-07-30 1981-07-30 Amplifier Pending JPS5757008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56120326A JPS5757008A (en) 1981-07-30 1981-07-30 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56120326A JPS5757008A (en) 1981-07-30 1981-07-30 Amplifier

Publications (1)

Publication Number Publication Date
JPS5757008A true JPS5757008A (en) 1982-04-06

Family

ID=14783480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56120326A Pending JPS5757008A (en) 1981-07-30 1981-07-30 Amplifier

Country Status (1)

Country Link
JP (1) JPS5757008A (en)

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