JPS60158330U - Scan automatic switching electronic circuit for electronic tuning radio - Google Patents
Scan automatic switching electronic circuit for electronic tuning radioInfo
- Publication number
- JPS60158330U JPS60158330U JP4420184U JP4420184U JPS60158330U JP S60158330 U JPS60158330 U JP S60158330U JP 4420184 U JP4420184 U JP 4420184U JP 4420184 U JP4420184 U JP 4420184U JP S60158330 U JPS60158330 U JP S60158330U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- electronic
- automatic switching
- tuning radio
- circuit
- 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
- Channel Selection Circuits, Automatic Tuning Circuits (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図は本考案によるＰＬＬシンセサイザ方式電子同調
用ラジオのスキャン自動切換え電子回路およびそれに関
連する受信機の一部のブロック図、第２図はチャージ・
ポンプ出力電圧の時間推移を示すダイヤグラムである。
１・・・電子同調用ＡＭチューナ、２・・・電子同調用
ＦＭチューナ、３・・・ＡＭ／ＦＭラジオ用ＰＬＬシン
セサイザおよびコントローラ、４および６・・・バッフ
ァ回路、５・・・電圧比較器、７・・・スイッチング回
路、８・・・発振器、９・・・感度調整器、１０・・・
抵低周波増幅器、１１・・・スピーカ、１２・・・ＦＭ
／ＡＭ検波器の出力端子、１３・・・音量調節器、ＥＱ
ｌ・・・ＡＭ位相検波器のチャージ・ポンプ出力、ＥＱ
２・・・ＦＭ′位相検波器のチャージ−ポンプ出力、Ｖ
丁ＡＭ・・・ＡＭチューナの可変容量ダイオード制御用
端子、Ｖ Ｔ Ｐ Ｍ・・・ＦＭチューナの可容量ダイ
オード制御用端子、Ｓ□・・・スキャン釦、Ｓ２・・・
シーク釦、Ｑ□〜Ｑ。
・・−ＮＰＮ ）ランジスタ、Ｒ１−Ｒ１４・・・抵抗
、Ｃ１〜Ｃ２・・・コンデンサ。FIG. 1 is a block diagram of a scan automatic switching electronic circuit of a PLL synthesizer type electronic tuning radio according to the present invention and a part of a receiver related thereto.
3 is a diagram showing the time course of pump output voltage. DESCRIPTION OF SYMBOLS 1... AM tuner for electronic tuning, 2... FM tuner for electronic tuning, 3... PLL synthesizer and controller for AM/FM radio, 4 and 6... Buffer circuit, 5... Voltage comparator , 7... Switching circuit, 8... Oscillator, 9... Sensitivity adjuster, 10...
Low frequency amplifier, 11... Speaker, 12... FM
/AM detector output terminal, 13...Volume adjuster, EQ
l...AM phase detector charge pump output, EQ
2...FM' phase detector charge pump output, V
AM...AM tuner variable capacitance diode control terminal, V TPM...FM tuner capacitance diode control terminal, S□...scan button, S2...
Seek button, Q□~Q. ...-NPN) transistor, R1-R14...resistor, C1-C2...capacitor.
Claims (1)
イオードに印加し、同調用電圧として使用し、同時に上
記出力電圧を電圧比較器を用いて予め定められた基準電
圧と比較し、上記出力電圧が上記基準電圧を上または下
回るとき、上記電圧比較器出力がバッファ回路を介して
スイッチング回路を動作させ、発振器が働き、スピーカ
から電子音を発生させることを特徴とするＰＬＬシンセ
サイザ方式電子同調用ラジオのスキャン自動切換え電子
回路。The output voltage of the charge pump of the phase detector is applied to a variable capacitance diode and used as a tuning voltage, and at the same time, the output voltage is compared with a predetermined reference voltage using a voltage comparator, and the output voltage is A PLL synthesizer type electronic tuning radio characterized in that when the voltage exceeds or falls below the reference voltage, the voltage comparator output operates a switching circuit via a buffer circuit, an oscillator operates, and an electronic sound is generated from a speaker. Scan automatic switching electronic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4420184U JPS60158330U (en) | 1984-03-29 | 1984-03-29 | Scan automatic switching electronic circuit for electronic tuning radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4420184U JPS60158330U (en) | 1984-03-29 | 1984-03-29 | Scan automatic switching electronic circuit for electronic tuning radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60158330U true JPS60158330U (en) | 1985-10-22 |
Family
ID=30556563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4420184U Pending JPS60158330U (en) | 1984-03-29 | 1984-03-29 | Scan automatic switching electronic circuit for electronic tuning radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60158330U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593330A (en) * | 1979-01-09 | 1980-07-15 | Sony Corp | Receiver |
| JPS5718119A (en) * | 1980-07-09 | 1982-01-29 | Pioneer Electronic Corp | Channel selection device of receiver |
-
1984
- 1984-03-29 JP JP4420184U patent/JPS60158330U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593330A (en) * | 1979-01-09 | 1980-07-15 | Sony Corp | Receiver |
| JPS5718119A (en) * | 1980-07-09 | 1982-01-29 | Pioneer Electronic Corp | Channel selection device of receiver |
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