JPS5783908A - Preventing circuit for pop sound generation - Google Patents

Preventing circuit for pop sound generation

Info

Publication number
JPS5783908A
JPS5783908A JP55160009A JP16000980A JPS5783908A JP S5783908 A JPS5783908 A JP S5783908A JP 55160009 A JP55160009 A JP 55160009A JP 16000980 A JP16000980 A JP 16000980A JP S5783908 A JPS5783908 A JP S5783908A
Authority
JP
Japan
Prior art keywords
input
terminal
amplifier
potential
power source
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
JP55160009A
Other languages
Japanese (ja)
Other versions
JPS616566B2 (en
Inventor
Takuzo Kamimura
Jiyunichi Hikita
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.)
TOUYOU DENGU SEISAKUSHO KK
Rohm Co Ltd
Original Assignee
TOUYOU DENGU SEISAKUSHO KK
Rohm Co Ltd
Toyo Electronics Industry Corp
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 TOUYOU DENGU SEISAKUSHO KK, Rohm Co Ltd, Toyo Electronics Industry Corp filed Critical TOUYOU DENGU SEISAKUSHO KK
Priority to JP55160009A priority Critical patent/JPS5783908A/en
Publication of JPS5783908A publication Critical patent/JPS5783908A/en
Publication of JPS616566B2 publication Critical patent/JPS616566B2/ja
Granted legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To prevent the generation of a pop sound securely, by providing a by- pass circuit which prevents capacitors connected to an input and a feedback terminal from having a difference in potential when a power source is put to work.
CONSTITUTION: A bias is applied from a bias output terminal 44 to an input terminal 56 through the series resistance Rg of a magnetic head 72, and a bias output is supplied similarly to a feedback terminal 58 through a gain decision element 78, placing an input and a feedback system in floating states. Since an input coupling capacitor is omitted from this amplifier 22, increasing the time constant of the gain decision circuit 78 is the decisive factor to remove an abnormal sound. In a stationary state, the base potentials of transistors 50 and 52 are nearly equal, so the amplifier 22 rises without generating any abnormal sound when the potential is zero when the power source is put to work. Then, a capacitor 76 is short-circuited through resistances 70 and 74.
COPYRIGHT: (C)1982,JPO&Japio
JP55160009A 1980-11-13 1980-11-13 Preventing circuit for pop sound generation Granted JPS5783908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160009A JPS5783908A (en) 1980-11-13 1980-11-13 Preventing circuit for pop sound generation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160009A JPS5783908A (en) 1980-11-13 1980-11-13 Preventing circuit for pop sound generation

Publications (2)

Publication Number Publication Date
JPS5783908A true JPS5783908A (en) 1982-05-26
JPS616566B2 JPS616566B2 (en) 1986-02-27

Family

ID=15705997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160009A Granted JPS5783908A (en) 1980-11-13 1980-11-13 Preventing circuit for pop sound generation

Country Status (1)

Country Link
JP (1) JPS5783908A (en)

Also Published As

Publication number Publication date
JPS616566B2 (en) 1986-02-27

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