JPS60139352U - High frequency receiving circuit - Google Patents
High frequency receiving circuitInfo
- Publication number
- JPS60139352U JPS60139352U JP2774784U JP2774784U JPS60139352U JP S60139352 U JPS60139352 U JP S60139352U JP 2774784 U JP2774784 U JP 2774784U JP 2774784 U JP2774784 U JP 2774784U JP S60139352 U JPS60139352 U JP S60139352U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- video intermediate
- resistor
- amplification circuit
- high frequency
- 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Superheterodyne Receivers (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図はこの考案の説明に供する高周波受信回路の一
例を示す系統図、第２図＜１従来におけるその要部の具
体的な接続図、第３図はこの考案に係る高周波受信回路
の一例を示す要部の具体的な接続図、第４図は、温度特
性測定回路の一例を示す接続図である。
４はＶＨＦ用の周波数混合回路、６は映像中間 −
周波増拓回路、１４はＬＪＨＦ用の周波数混合口
、路、１６はＵＨＦ用の映像中間周波増幅回路、Ｒ２
、は共通負荷抵抗器、丸はゲイン設定用の抵抗器である
。- Fig. 1 is a system diagram showing an example of a high frequency receiving circuit to explain this invention, Fig. 2 is a concrete connection diagram of the main parts of the conventional device, and Fig. 3 is a diagram of a high frequency receiving circuit according to this invention. FIG. 4 is a connection diagram showing an example of a temperature characteristic measuring circuit. 4 is a frequency mixing circuit for VHF, 6 is a video intermediate circuit -
Frequency expansion circuit, 14 is frequency mixing port for LJHF
, 16 is a video intermediate frequency amplification circuit for UHF, R2
, is a common load resistor, and the circle is a resistor for gain setting.
Claims (1)
タｉこ負荷抵抗器が接続され、この出力トランジスタよ
り得られるＶＨＦ用映像中間周波信号が抵抗器を介して
映像中間周波増幅回路に供給されると共に、ＵＨＦ用の
映像中間周波増幅回路゛ に設けられた出力トランジス
タが上記負荷抵抗器が共通の負荷抵抗器となるように上
記抵抗器と映像中間周波増幅回路の入力段との接続点に
接続され、上記抵抗器によって上記ＵＨＦ用映像中間周
波増幅回路のゲインを任意に設定できるようにした高周
波受信回路。An output transistor provided in a VHF frequency mixing circuit is connected to a load resistor, and a VHF video intermediate frequency signal obtained from this output transistor is supplied to the video intermediate frequency amplification circuit via the resistor. An output transistor provided in a video intermediate frequency amplification circuit for UHF is connected to a connection point between the resistor and an input stage of the video intermediate frequency amplification circuit so that the load resistor serves as a common load resistor, A high frequency receiving circuit in which the gain of the UHF video intermediate frequency amplification circuit can be arbitrarily set using the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2774784U JPS60139352U (en) | 1984-02-28 | 1984-02-28 | High frequency receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2774784U JPS60139352U (en) | 1984-02-28 | 1984-02-28 | High frequency receiving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60139352U true JPS60139352U (en) | 1985-09-14 |
| JPH0238522Y2 JPH0238522Y2 (en) | 1990-10-17 |
Family
ID=30524981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2774784U Granted JPS60139352U (en) | 1984-02-28 | 1984-02-28 | High frequency receiving circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139352U (en) |
-
1984
- 1984-02-28 JP JP2774784U patent/JPS60139352U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0238522Y2 (en) | 1990-10-17 |
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