JPS5834433U - AFT signal detection circuit - Google Patents
AFT signal detection circuitInfo
- Publication number
- JPS5834433U JPS5834433U JP12880181U JP12880181U JPS5834433U JP S5834433 U JPS5834433 U JP S5834433U JP 12880181 U JP12880181 U JP 12880181U JP 12880181 U JP12880181 U JP 12880181U JP S5834433 U JPS5834433 U JP S5834433U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- signal detection
- detection circuit
- resistor
- base
- 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.)
- Granted
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図はＡＦＴ信号検出回路が用いられる同調表示シス
テムの構成図、第２図は従来のＡＦＴ信号検出回路の具
体的回路図、第３図ａ −ｄは第１図、第２図の回路の
動作説明のために示した動作波形図、第４図はこの考案
の一実施例を示す回路図である。
１１、 １２． １３・・・抵抗、Ｄ工□、Ｄ１□・・
・ダイオード、Ｑ１□、Ｑ□２・・・トランジスタ。Figure 1 is a block diagram of a tuning display system using an AFT signal detection circuit, Figure 2 is a specific circuit diagram of a conventional AFT signal detection circuit, and Figures 3a-d are the circuits of Figures 1 and 2. FIG. 4 is a circuit diagram showing an embodiment of this invention. 11, 12. 13...Resistance, D□, D1□...
・Diode, Q1□, Q□2...transistor.
Claims (1)
第２の検波出力が加えられる第１、第２の入力端子を有
し、第１の入力端子は第１の抵抗を介して第１のトラン
ジスタのベースに接続され、第２の入力端子は第２の抵
抗を介して第２のトランジスタのベースに接続され、該
第１、第２のトランジスタのベース間に互いに逆方向の
ＭＬ 第２のダイオードが直列接続され、第１、第２の
ダイオードの共通接続されたカソードが前記第１、第２
のトランジスタの共通エミッタに接続され、前記第１１
．第２のトランジスタの共通コレクタが第３の抵抗を介
して接地されてなるふとを特徴とするＡＦＴ信号検出回
路。The first of the symmetrical figure 8 characteristics obtained from the AFT output circuit,
It has first and second input terminals to which a second detection output is applied, the first input terminal is connected to the base of the first transistor via the first resistor, and the second input terminal is connected to the base of the first transistor. A second diode is connected in series between the bases of the first and second transistors in opposite directions, and the first and second diodes are connected to the base of the second transistor through a resistor of Commonly connected cathodes are connected to the first and second cathodes.
connected to the common emitters of the eleventh transistors;
．． An AFT signal detection circuit characterized in that a common collector of the second transistor is grounded via a third resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12880181U JPS5834433U (en) | 1981-08-31 | 1981-08-31 | AFT signal detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12880181U JPS5834433U (en) | 1981-08-31 | 1981-08-31 | AFT signal detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5834433U true JPS5834433U (en) | 1983-03-05 |
| JPH0117866Y2 JPH0117866Y2 (en) | 1989-05-24 |
Family
ID=29922480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12880181U Granted JPS5834433U (en) | 1981-08-31 | 1981-08-31 | AFT signal detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5834433U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63165646U (en) * | 1987-04-17 | 1988-10-28 | ||
| JPH01139229U (en) * | 1988-03-16 | 1989-09-22 |
-
1981
- 1981-08-31 JP JP12880181U patent/JPS5834433U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63165646U (en) * | 1987-04-17 | 1988-10-28 | ||
| JPH01139229U (en) * | 1988-03-16 | 1989-09-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0117866Y2 (en) | 1989-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5834433U (en) | AFT signal detection circuit | |
| JPS60124045U (en) | Output transistor protection circuit | |
| JPS58186610U (en) | Muting circuit | |
| JPS5811330U (en) | Waveform shaping circuit | |
| JPS5866712U (en) | Muting circuit | |
| JPS59119620U (en) | ideal diode circuit | |
| JPS5899939U (en) | semiconductor logic circuit | |
| JPS5936610U (en) | Muting circuit of voltage amplification circuit | |
| JPS5854137U (en) | Binary conversion circuit | |
| JPS5861531U (en) | limiter | |
| JPS58186632U (en) | Waveform shaping circuit | |
| JPS59137615U (en) | amplifier circuit | |
| JPS6047326U (en) | Waveform shaping circuit | |
| JPS60172434U (en) | Malfunction prevention circuit at startup | |
| JPS6049649U (en) | semiconductor equipment | |
| JPS618313U (en) | constant voltage circuit | |
| JPS58101398U (en) | sample hold circuit | |
| JPS6137626U (en) | variable resistance circuit | |
| JPS6082841U (en) | Transistor on voltage rise prevention circuit | |
| JPS6140073U (en) | clamp circuit | |
| JPS6032819U (en) | Muting circuit | |
| JPS5939418U (en) | selection circuit | |
| JPS5811337U (en) | C-MOS power supply circuit | |
| JPS59127383U (en) | switch circuit | |
| JPS5871233U (en) | AFT signal detection circuit in tuning display device |