JPS5783909A - Preventing circuit for generation of pop sound - Google Patents

Preventing circuit for generation of pop sound

Info

Publication number
JPS5783909A
JPS5783909A JP55160010A JP16001080A JPS5783909A JP S5783909 A JPS5783909 A JP S5783909A JP 55160010 A JP55160010 A JP 55160010A JP 16001080 A JP16001080 A JP 16001080A JP S5783909 A JPS5783909 A JP S5783909A
Authority
JP
Japan
Prior art keywords
generation
pop sound
preventing circuit
potential
capacitor
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
JP55160010A
Other languages
Japanese (ja)
Inventor
Kaoru Izawa
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 JP55160010A priority Critical patent/JPS5783909A/en
Publication of JPS5783909A publication Critical patent/JPS5783909A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To eliminate the generation of a pop sound by turning on a switch, provided to an output terminal, slowly after a power source is put to work.
CONSTITUTION: When a power switch 22 is turned on, a capacitor 20 is charged through a resistance 16. The charge potential of the capacitor 20 is applied to the base of a transistor (TR) 4 through a resistance 18. As a result, the emitter- side potential of the TR4 rises slowly to a value lower by the forward potential of the TR4. Consequently, a pop sound is generated in an amplifier 2 only before the TR4 rises, so that it will not appear at an output terminal 10.
COPYRIGHT: (C)1982,JPO&Japio
JP55160010A 1980-11-13 1980-11-13 Preventing circuit for generation of pop sound Pending JPS5783909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160010A JPS5783909A (en) 1980-11-13 1980-11-13 Preventing circuit for generation of pop sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160010A JPS5783909A (en) 1980-11-13 1980-11-13 Preventing circuit for generation of pop sound

Publications (1)

Publication Number Publication Date
JPS5783909A true JPS5783909A (en) 1982-05-26

Family

ID=15706019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160010A Pending JPS5783909A (en) 1980-11-13 1980-11-13 Preventing circuit for generation of pop sound

Country Status (1)

Country Link
JP (1) JPS5783909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144905A (en) * 1984-12-17 1986-07-02 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Sprious signal reducing circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144905A (en) * 1984-12-17 1986-07-02 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Sprious signal reducing circuit
JPH0620167B2 (en) * 1984-12-17 1994-03-16 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Spurious signal reduction circuit

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