JPS615042U - High frequency amplifier circuit - Google Patents
High frequency amplifier circuitInfo
- Publication number
- JPS615042U JPS615042U JP8852784U JP8852784U JPS615042U JP S615042 U JPS615042 U JP S615042U JP 8852784 U JP8852784 U JP 8852784U JP 8852784 U JP8852784 U JP 8852784U JP S615042 U JPS615042 U JP S615042U
- Authority
- JP
- Japan
- Prior art keywords
- mode
- amplifier circuit
- high frequency
- distance
- 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
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (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図はこの考案に係る高周波増幅回路の一実施例を示
す回路図、第2図は従来の高周波増幅回路の構成を示す
回路図である。
11・・・同調回路、12・・・FET増幅回路、13
・・・モード切換スイッチ、R4・・・補正抵抗。FIG. 1 is a circuit diagram showing an embodiment of a high frequency amplification circuit according to this invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional high frequency amplification circuit. 11... Tuning circuit, 12... FET amplifier circuit, 13
...Mode changeover switch, R4...Correction resistor.
Claims (1)
ET増幅回路で増幅するもので、FETのソース抵抗を
モード切換スイッチで選択的に分割することにより前記
FET増幅回路の増幅度を切換えて遠距離受信モード及
び近距離モードを選択切換設定するモード切換手段を有
する高周波増幅回路において、前記モード切換スイッチ
を遠距離−モードから近距離モードに切換えるときFE
Tのソースインピーダンス成分が小さくなるように前記
モード切換スイッチに並列に接続される補正抵抗を具備
し、前記モード切換え時にFET増幅回路の入カキャバ
シタンスが変化しないようにしたことを特徴とする高周
波増幅回路。The high frequency signal output from the tuned circuit is connected to the drain-grounded type F.
Amplification is performed by an ET amplifier circuit, and the mode switching mode selects and sets a long-distance reception mode and a short-distance mode by selectively dividing the source resistance of the FET with a mode selection switch to switch the amplification degree of the FET amplifier circuit. In the high frequency amplification circuit having means, when the mode changeover switch is switched from the long distance mode to the short distance mode, the FE
A high frequency amplifier circuit comprising a correction resistor connected in parallel to the mode changeover switch so that the source impedance component of T is small, so that the input capacitance of the FET amplifier circuit does not change when changing the mode. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8852784U JPS615042U (en) | 1984-06-14 | 1984-06-14 | High frequency amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8852784U JPS615042U (en) | 1984-06-14 | 1984-06-14 | High frequency amplifier circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS615042U true JPS615042U (en) | 1986-01-13 |
Family
ID=30641754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8852784U Pending JPS615042U (en) | 1984-06-14 | 1984-06-14 | High frequency amplifier circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS615042U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363311U (en) * | 1986-10-15 | 1988-04-26 |
-
1984
- 1984-06-14 JP JP8852784U patent/JPS615042U/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6363311U (en) * | 1986-10-15 | 1988-04-26 | ||
JPH058801Y2 (en) * | 1986-10-15 | 1993-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS615042U (en) | High frequency amplifier circuit | |
JPS6047316U (en) | Amplifier | |
JPS5917018U (en) | Auto level control circuit | |
JPS59129241U (en) | VHF tuner coupling circuit | |
JPS5988919U (en) | Signal switching circuit | |
JPS61321U (en) | Bass-treble control device | |
JPS60181940U (en) | AM/FM stereo receiver | |
JPH01175021U (en) | ||
JPS59143165U (en) | Video intermediate frequency circuit | |
JPS62119012U (en) | ||
JPS58191743U (en) | radio receiver | |
JPS58141637U (en) | RF switch circuit | |
JPS59140510U (en) | Television receiver audio signal demodulation circuit | |
JPS6253810U (en) | ||
JPS58147329U (en) | Tuning display circuit in radio receiver | |
JPS5933345U (en) | transceiver | |
JPS61340U (en) | radio receiver | |
JPS6135425U (en) | recording amplification circuit | |
JPS59174728U (en) | Receiving machine | |
JPS5973823U (en) | Loudness control circuit | |
JPS59169145U (en) | AM Chuna | |
JPS60180160U (en) | noise reduction circuit | |
JPS60108072U (en) | Television receiver level adjustment circuit | |
JPS5984916U (en) | Frequency characteristic adjustment circuit | |
JPS59125134U (en) | Auto scan switching circuit of radio wave receiver |