KR830000560Y1 - 전원 언/오프(on/off)시 뮤트(mute) 및 과부하 보호회로 - Google Patents
전원 언/오프(on/off)시 뮤트(mute) 및 과부하 보호회로 Download PDFInfo
- Publication number
- KR830000560Y1 KR830000560Y1 KR2019810007712U KR810007712U KR830000560Y1 KR 830000560 Y1 KR830000560 Y1 KR 830000560Y1 KR 2019810007712 U KR2019810007712 U KR 2019810007712U KR 810007712 U KR810007712 U KR 810007712U KR 830000560 Y1 KR830000560 Y1 KR 830000560Y1
- Authority
- KR
- South Korea
- Prior art keywords
- transistor
- resistor
- turned
- power
- circuit
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 210000000106 sweat gland Anatomy 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (1)
- 전원 언/오프시 톤암프(T)로 입력되는 잡음 신호를 없애기 위하여 다이오드(D), 제너다이오드(D), 컨덴서(C)(C), 트랜지스터(Q), 저항(R1)(R2)으로 구성된 정전압회로에 트랜지스터(Q2), (Q3)를 결합하여, 상기 트랜지스터(Q3)가 저항(R2) 컨덴서(C2)의 시정수 만큼 동작하여, 음성입력신호를 잠시 단락시켜서 뮤팅동작을 행하며, 과부하로 인해 출력측 트랜지스터(Q7, Q8) 사이의 저항(R3), (R4)에 과전류에 의한 과전압상태가 검지되었을 때 트랜지스터(Q3), (Q4), (Q5)가 차례로 동작토록하여서 상기 뮤팅동작을 시키므로서 스피커를 과부하로부터 보호함을 특징으로하는 전원 언/오프시 뮤트동작 및 과부하보호 회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019810007712U KR830000560Y1 (ko) | 1981-11-16 | 1981-11-16 | 전원 언/오프(on/off)시 뮤트(mute) 및 과부하 보호회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019810007712U KR830000560Y1 (ko) | 1981-11-16 | 1981-11-16 | 전원 언/오프(on/off)시 뮤트(mute) 및 과부하 보호회로 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR830000560Y1 true KR830000560Y1 (ko) | 1983-04-13 |
Family
ID=19223286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019810007712U KR830000560Y1 (ko) | 1981-11-16 | 1981-11-16 | 전원 언/오프(on/off)시 뮤트(mute) 및 과부하 보호회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR830000560Y1 (ko) |
-
1981
- 1981-11-16 KR KR2019810007712U patent/KR830000560Y1/ko active
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19811116 |
|
UG1604 | Publication of application |
Patent event code: UG16041S01I Comment text: Decision on Publication of Application Patent event date: 19830314 |
|
UE0701 | Decision of registration |
Patent event date: 19830625 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |
|
UR0701 | Registration of establishment |
Patent event date: 19830805 Patent event code: UR07011E01D Comment text: Registration of Establishment |
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UR1002 | Payment of registration fee |
Start annual number: 1 End annual number: 3 Payment date: 19830805 |
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UR1001 | Payment of annual fee |
Payment date: 19851226 Start annual number: 4 End annual number: 4 |
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UR1001 | Payment of annual fee |
Payment date: 19870121 Start annual number: 5 End annual number: 5 |
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UR1001 | Payment of annual fee |
Payment date: 19871222 Start annual number: 6 End annual number: 6 |
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UR1001 | Payment of annual fee |
Payment date: 19890203 Start annual number: 7 End annual number: 7 |
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UR1001 | Payment of annual fee |
Payment date: 19891222 Start annual number: 8 End annual number: 8 |
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UR1001 | Payment of annual fee |
Payment date: 19901228 Start annual number: 9 End annual number: 9 |
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UR1001 | Payment of annual fee |
Payment date: 19920327 Start annual number: 10 End annual number: 10 |
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UC1801 | Expiration of term |
Termination category: Others Termination date: 19941008 |