JPS5922527U - Voltage variable tuning circuit - Google Patents
Voltage variable tuning circuitInfo
- Publication number
- JPS5922527U JPS5922527U JP11647382U JP11647382U JPS5922527U JP S5922527 U JPS5922527 U JP S5922527U JP 11647382 U JP11647382 U JP 11647382U JP 11647382 U JP11647382 U JP 11647382U JP S5922527 U JPS5922527 U JP S5922527U
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- voltage
- voltage variable
- tuning circuit
- capacitance diode
- 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
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、第２図は従来一般に用いられている電圧勘同調
回路の一例を示す回路図、第３図はこの考案による電圧
可変同調回路の一実施例を示す回路図、第４図はこの考
案による他の実施例を示す回路図である。
１・・・同調コイル、２・・・電圧可変容量ダイオード
、３、 ５． ６・・・コンデンサ、４．７・・・抵抗
。Figures 1 and 2 are circuit diagrams showing an example of a conventional voltage variable tuning circuit, Figure 3 is a circuit diagram showing an example of a voltage variable tuning circuit according to this invention, and Figure 4 is a circuit diagram showing an example of a voltage variable tuning circuit according to this invention. FIG. 6 is a circuit diagram showing another embodiment of the invention. 1... Tuning coil, 2... Voltage variable capacitance diode, 3, 5. 6... Capacitor, 4.7... Resistor.
Claims (1)
れ、外部から供給される同調電圧により電圧可変容量ダ
イオードを制御して同調周波数を制御する電圧可変同調
回路において、上記同調電圧に含まれるノイズ分をコン
デンサを介して一端がアースされた抵抗に供給し、この
抵抗の両端に発生するノイズ分を前記電圧可変容量ダイ
オードの両端間に同調電圧に含まれてノイズ分に対して
逆極性となるように印加することにより、同調電圧に含
まれるノイズ分により同調周波数の変動を ′防止し
たことを特徴とする電圧可変同調回路。In a voltage variable tuning circuit that is composed of a tuning coil and a voltage variable capacitance diode, and controls the voltage variable capacitance diode using an externally supplied tuning voltage to control the tuning frequency, a capacitor is used to absorb the noise included in the tuning voltage. The noise component generated across the resistor is applied across the voltage variable capacitance diode so that it is included in the tuning voltage and has the opposite polarity to the noise component. A variable voltage tuning circuit characterized in that fluctuations in the tuning frequency due to noise contained in the tuning voltage are prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11647382U JPS5922527U (en) | 1982-07-31 | 1982-07-31 | Voltage variable tuning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11647382U JPS5922527U (en) | 1982-07-31 | 1982-07-31 | Voltage variable tuning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5922527U true JPS5922527U (en) | 1984-02-10 |
Family
ID=30268478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11647382U Pending JPS5922527U (en) | 1982-07-31 | 1982-07-31 | Voltage variable tuning circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922527U (en) |
-
1982
- 1982-07-31 JP JP11647382U patent/JPS5922527U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5922527U (en) | Voltage variable tuning circuit | |
| JPS6093327U (en) | electronic tuner circuit | |
| JPS5976119U (en) | voltage controlled oscillator | |
| JPS58132429U (en) | Electronic tuning applied voltage supply device | |
| JPS59134935U (en) | AFT voltage superimposition circuit | |
| JPS59193010U (en) | piezoelectric oscillator | |
| JPS59137611U (en) | oscillation circuit | |
| JPS58173916U (en) | oscillation circuit | |
| JPS5840933U (en) | Shortwave receiver tuning device | |
| JPS6079819U (en) | Load current limit circuit | |
| JPS5883811U (en) | oscillation circuit | |
| JPS5969513U (en) | voltage controlled oscillator | |
| JPS58141606U (en) | Oscillator frequency fine adjustment circuit | |
| JPS591210U (en) | frequency modulation circuit | |
| JPS60101847U (en) | Tuner in television receiver | |
| JPS593608U (en) | oscillation circuit | |
| JPS58147324U (en) | Dynamic filter circuit | |
| JPS58191729U (en) | voltage comparison circuit | |
| JPS58166130U (en) | Receiver fine tuning device | |
| JPS5816914U (en) | piezoelectric oscillator | |
| JPS5980943U (en) | touch detection circuit | |
| JPS5969514U (en) | oscillation circuit | |
| JPS58176420U (en) | Resonant voltage control circuit | |
| JPS59104643U (en) | AM receiver | |
| JPS5846291U (en) | Inverter starting circuit |