JPS6150350U - - Google Patents
Info
- Publication number
- JPS6150350U JPS6150350U JP13488684U JP13488684U JPS6150350U JP S6150350 U JPS6150350 U JP S6150350U JP 13488684 U JP13488684 U JP 13488684U JP 13488684 U JP13488684 U JP 13488684U JP S6150350 U JPS6150350 U JP S6150350U
- Authority
- JP
- Japan
- Prior art keywords
- whose
- resistor
- diode
- grounded
- power supply
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案によるミユーテイング回路を含
む受信機の構成を示すブロツク図、第２図は、ス
イツチをオフするとき、第１図中のａ，ｂおよび
ｃ点の電位の推多を示すダイアグラムである。
１…アンテナ、２…フロントエンド、３…中間
周波増幅および検波回路、４…ノイズキヤンセラ
およびマルチプレツクス回路、５…バス／トレブ
ル回路、６…低周波増幅回路、７…スピーカ、８
…電源回路、９…バツクアツプ端子、１０…ＡＣ
Ｃ端子、１１…フユーズ、１２…スイツチ、１３
…コントローラＡＦミユート信号端子、Ｑ１，Ｑ
２，Ｑ３…ＮＰＮトランジスタ、Ｄ１…ツエナー
ダイオード、Ｄ２，Ｄ３…ダイオード、Ｒ１，Ｒ
２…抵抗、Ｃ…コンデンサ。
Fig. 1 is a block diagram showing the configuration of a receiver including a muting circuit according to the present invention, and Fig. 2 is a diagram showing the evolution of the potential at points a, b, and c in Fig. 1 when the switch is turned off. It is. DESCRIPTION OF SYMBOLS 1...Antenna, 2...Front end, 3...Intermediate frequency amplification and detection circuit, 4...Noise canceller and multiplex circuit, 5...Bass/treble circuit, 6...Low frequency amplification circuit, 7...Speaker, 8
...power supply circuit, 9...backup terminal, 10...AC
C terminal, 11...Fuse, 12...Switch, 13
...Controller AF mute signal terminal, Q 1 , Q
2 , Q3 ...NPN transistor, D1 ...Zener diode, D2 , D3 ...diode, R1 , R
2 ...Resistor, C...Capacitor.
Claims (1)
続され、コレクタが抵抗を介してバツクアツプ電
源に接続され、エミツタが接地されている第１の
トランジスタ、およびベースが抵抗およびダイオ
ードを介してコントローラのＡＦミユート信号出
力端子および上記抵抗および他の一つのダイオー
ドを介して上記第１のトランジスタのコレクタに
接続され、同時にコンデンサを介して接地され、
エミツタが直接接地され、コレクタはそれぞれ右
および左の信号路線に接続されている第２および
第３のトランジスタを含むことを特徴とするミユ
ーテイング回路。 A first transistor whose base is connected to the power supply through a Zener diode, whose collector is connected to the backup power supply through a resistor, and whose emitter is grounded, and whose base is connected to the AF mute signal output of the controller through the resistor and diode. terminal and connected to the collector of the first transistor via the resistor and another diode, and simultaneously grounded via a capacitor;
A muting circuit comprising second and third transistors whose emitters are directly grounded and whose collectors are connected to right and left signal lines, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13488684U JPS6150350U (en) | 1984-09-05 | 1984-09-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13488684U JPS6150350U (en) | 1984-09-05 | 1984-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6150350U true JPS6150350U (en) | 1986-04-04 |
Family
ID=30693387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13488684U Pending JPS6150350U (en) | 1984-09-05 | 1984-09-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6150350U (en) |
-
1984
- 1984-09-05 JP JP13488684U patent/JPS6150350U/ja active Pending