JPS5783908A - Preventing circuit for pop sound generation - Google Patents
Preventing circuit for pop sound generationInfo
- 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
Links
Landscapes
- 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
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) |
-
1980
- 1980-11-13 JP JP55160009A patent/JPS5783908A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS616566B2 (en) | 1986-02-27 |
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