JPS583636U - automatic frequency adjustment circuit - Google Patents
automatic frequency adjustment circuitInfo
- Publication number
- JPS583636U JPS583636U JP9609681U JP9609681U JPS583636U JP S583636 U JPS583636 U JP S583636U JP 9609681 U JP9609681 U JP 9609681U JP 9609681 U JP9609681 U JP 9609681U JP S583636 U JPS583636 U JP S583636U
- Authority
- JP
- Japan
- Prior art keywords
- frequency adjustment
- automatic frequency
- circuit
- adjustment circuit
- voltage
- 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
- Television Receiver Circuits (AREA)
- 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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＡＦＴ引き込み範囲とＡＦＴ電圧との関係を示
す特性図、第２図は映像中間周波増幅回路の出力段にお
ける信号に対する周波数特性を示す特性図、第３図はチ
ューナ内の局部発振回路の同調回路を示す回路図、第４
図はＡＦＴ電圧に対する発振周波数の関係を示す特性図
、第５図は従来のＡＦＴ回路を示す回路図、第６図は本
考案の一実施例を示す回路図、第７図は本考案の他の実
施例を示す回路図である。
２・・・・・・ＡＦＴ端子、１１・・・・・・ＡＦＴ電
圧発生回路、１２・・・・・・ＡＦＴ出力回路、１３．
２１・・・・・・ＡＦＴスイッチ、２２・・・・・・電
圧線、２３．２５・・・・・・抵抗、２４・・・・・・
可変抵抗、２６・・・・・・ツェナーダイオード、２７
・・・・・・コンデンサ。Figure 1 is a characteristic diagram showing the relationship between the AFT pull-in range and AFT voltage, Figure 2 is a characteristic diagram showing the frequency characteristics for the signal at the output stage of the video intermediate frequency amplification circuit, and Figure 3 is the local oscillation circuit in the tuner. Circuit diagram showing the tuning circuit of 4th
The figure is a characteristic diagram showing the relationship between the oscillation frequency and the AFT voltage, Figure 5 is a circuit diagram showing a conventional AFT circuit, Figure 6 is a circuit diagram showing an embodiment of the present invention, and Figure 7 is a circuit diagram showing an embodiment of the present invention. FIG. 2 is a circuit diagram showing an embodiment of the present invention. 2...AFT terminal, 11...AFT voltage generation circuit, 12...AFT output circuit, 13.
21...AFT switch, 22...Voltage line, 23.25...Resistance, 24...
Variable resistor, 26... Zener diode, 27
・・・・・・Capacitor.
Claims (1)
出力される信号を取り込んで自動周波数調整用の電圧を
局部発振回路の自動周波数調整端子に供給することによ
り基準となる周波数からの周波数変動を自動的に調整す
る自動周波数調整回路において、 前記自動周波数調整機能が停止あるい゛は作動している
時に機器内の電圧源から前記自動周波数調整端子に所定
の電圧を供給する手段を設けることを特徴とする自動周
波数調整回路。[Claim for Utility Model Registration] A standard is established by capturing a signal output from a video detection circuit in an electronic device such as a television receiver and supplying a voltage for automatic frequency adjustment to an automatic frequency adjustment terminal of a local oscillation circuit. In an automatic frequency adjustment circuit that automatically adjusts frequency fluctuations from a frequency, a predetermined voltage is applied from a voltage source in the device to the automatic frequency adjustment terminal when the automatic frequency adjustment function is stopped or activated. An automatic frequency adjustment circuit characterized by providing means for supplying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9609681U JPS583636U (en) | 1981-06-30 | 1981-06-30 | automatic frequency adjustment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9609681U JPS583636U (en) | 1981-06-30 | 1981-06-30 | automatic frequency adjustment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS583636U true JPS583636U (en) | 1983-01-11 |
Family
ID=29890977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9609681U Pending JPS583636U (en) | 1981-06-30 | 1981-06-30 | automatic frequency adjustment circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS583636U (en) |
-
1981
- 1981-06-30 JP JP9609681U patent/JPS583636U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2906817A (en) | Television receiver signal processing circuits | |
| US5175748A (en) | Waveform shaping circuit and receiver using same | |
| JPS583636U (en) | automatic frequency adjustment circuit | |
| US3420966A (en) | Electrical tape-slide synchronizing system | |
| US2834878A (en) | Controllable reactance systems | |
| KR900000566Y1 (en) | Dc regenerating circuits of television | |
| KR910006566Y1 (en) | Audio mute circuit | |
| JPS5942779Y2 (en) | blanking circuit | |
| JPS5819519U (en) | automatic gain control device | |
| JPS6329293Y2 (en) | ||
| KR960007566Y1 (en) | Voice signal processing circuit | |
| JPS6058637B2 (en) | Automatic saturation control circuit | |
| JPS58123681U (en) | Synchronous signal detection type signal control circuit | |
| JPS58166136U (en) | automatic frequency control circuit | |
| JPS63121975U (en) | ||
| JPS60184368U (en) | Television receiver malfunction prevention circuit | |
| JPS6314559B2 (en) | ||
| JPS639763B2 (en) | ||
| JPS6221630U (en) | ||
| JPS6258193B2 (en) | ||
| JPS5984980U (en) | Automatic quality adjustment circuit | |
| JPS58101568U (en) | brightness limiter circuit | |
| JPS5925818U (en) | Receiver automatic gain control circuit | |
| JPS6397971U (en) | ||
| JPS5823466U (en) | television receiver |