JPS5783909A - Preventing circuit for generation of pop sound - Google Patents
Preventing circuit for generation of pop soundInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1980
- 1980-11-13 JP JP55160010A patent/JPS5783909A/en active Pending
Cited By (2)
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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