JPS6085429U - Radio receiver tuning display circuit - Google Patents
Radio receiver tuning display circuitInfo
- Publication number
- JPS6085429U JPS6085429U JP17764083U JP17764083U JPS6085429U JP S6085429 U JPS6085429 U JP S6085429U JP 17764083 U JP17764083 U JP 17764083U JP 17764083 U JP17764083 U JP 17764083U JP S6085429 U JPS6085429 U JP S6085429U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- tuning
- radio receiver
- display circuit
- tuning display
- 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
- Noise Elimination (AREA)
- Circuits Of Receivers In General (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のラジオ受信機の同調表示回路を示す回路
図、第２図は本考案に係るラジオ受信機の同調表示回路
を示す回路図である。
５・・・同調検出信号出力端子、６・・・ミューティン
グ動作制御信号入力端子、１５・・・差動増幅器、１６
・・・定電圧源端子、Ｑｌ、 Ｑ２・・・第１、第２の
トランジスタ、Ｑ３・・・ミューティング動作制御用ス
イッチングトランジスタ、Ｑ４・・・ステレオ・モノラ
ル切換用スイッチングトランジスタ。FIG. 1 is a circuit diagram showing a tuning display circuit of a conventional radio receiver, and FIG. 2 is a circuit diagram showing a tuning display circuit of a radio receiver according to the present invention. 5... Tuning detection signal output terminal, 6... Muting operation control signal input terminal, 15... Differential amplifier, 16
...constant voltage source terminal, Ql, Q2...first and second transistors, Q3...switching transistor for muting operation control, Q4...switching transistor for stereo/monaural switching.
Claims (1)
トランジスタで構成された差動増幅器を用い、前記第１
のトランジスタのベースを同調時所定レベルの電位とな
る同調検出信号出力端子に接続するとともに、前記第１
のトランジスタのエミッタ・コレクタ路に同調表示用発
光ダイオードを接続し、前記第２のトランジスタのベー
スを定電圧源に接続し、前記発光ダイオードの両端電圧
にて、ミューティング動作制御用スイッチング素子及び
若しくはステレオ・モノラル切換用スイッチング素子を
制御してなるラジオ受信機の同調表示回路。Using a differential amplifier configured with a first and second transistor whose emitters are commonly connected to a power supply line,
The base of the first transistor is connected to the tuning detection signal output terminal which has a potential at a predetermined level during tuning, and
A light emitting diode for tuning display is connected to the emitter-collector path of the transistor, the base of the second transistor is connected to a constant voltage source, and a switching element for controlling muting operation and/or A tuning display circuit for a radio receiver that controls a switching element for switching between stereo and monaural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17764083U JPS6085429U (en) | 1983-11-16 | 1983-11-16 | Radio receiver tuning display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17764083U JPS6085429U (en) | 1983-11-16 | 1983-11-16 | Radio receiver tuning display circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6085429U true JPS6085429U (en) | 1985-06-12 |
Family
ID=30385881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17764083U Pending JPS6085429U (en) | 1983-11-16 | 1983-11-16 | Radio receiver tuning display circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6085429U (en) |
-
1983
- 1983-11-16 JP JP17764083U patent/JPS6085429U/en active Pending
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