JPS5819854Y2 - Hatsushinden Atsuseigen Cairo - Google Patents
Hatsushinden Atsuseigen CairoInfo
- Publication number
- JPS5819854Y2 JPS5819854Y2 JP14685975U JP14685975U JPS5819854Y2 JP S5819854 Y2 JPS5819854 Y2 JP S5819854Y2 JP 14685975 U JP14685975 U JP 14685975U JP 14685975 U JP14685975 U JP 14685975U JP S5819854 Y2 JPS5819854 Y2 JP S5819854Y2
- Authority
- JP
- Japan
- Prior art keywords
- hatsushinden
- atsuseigen
- cairo
- oscillation
- 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.)
- Expired
Links
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
Description
【考案の詳細な説明】
本考案はＡＭ−ＦＭの如く複数バンドを受信するための
受信機用発振回路の発振電圧制限回路の改良に係る。[Detailed Description of the Invention] The present invention relates to an improvement of an oscillation voltage limiting circuit of an oscillation circuit for a receiver for receiving multiple bands such as AM-FM.
図面に示すダイオード１を除く回路は周知の受信機用周
波数変換回路であるので之等の説明は要しないであろう
。Since the circuit shown in the drawings except for the diode 1 is a well-known frequency conversion circuit for a receiver, no further explanation is necessary.
従来、斯種発振電圧制限回路においては発振電圧を制限
するため夫々の発振周波数を決定するＬＣ共振回路２，
３に並列に点線で示すように夫々ダイオード４，５を設
けていた。Conventionally, in this type of oscillation voltage limiting circuit, an LC resonant circuit 2, which determines each oscillation frequency in order to limit the oscillation voltage, is used.
Diodes 4 and 5 were provided in parallel with diodes 3, respectively, as shown by dotted lines.
本考案は端的に云えば唯一個のダイオード１で従来と同
じ発振電圧制限の作用効果を得べく、実線の太線で示す
如く、両ＬＣ共振回路の非接地側端子６，７間をダイオ
ード１にて連結しバンド切換スイッチと連動するスイッ
チ８によって夫々の接続点を選択的に接地するよう工夫
したことを特徴とした回路結線である。Simply put, in order to obtain the same effect of limiting the oscillation voltage as in the past with only one diode 1, the present invention uses diode 1 between the non-grounded terminals 6 and 7 of both LC resonant circuits, as shown by the solid thick line. This circuit connection is characterized by being devised so that each connection point is selectively grounded by a switch 8 that connects the two bands and operates in conjunction with a band changeover switch.
図中Ｑはコンバーター用トランジスタ、９はＲＦ信号注
入用、１０は両共振回路に同調用可変蓄電器ＶＣを選択
的に接続するための、及び１１は発振勢力を前記コンバ
ーター用トランジスタＱに注入するためのバンド切換ス
イッチである。In the figure, Q is a converter transistor, 9 is for RF signal injection, 10 is for selectively connecting the tuning variable capacitor VC to both resonance circuits, and 11 is for injecting oscillation force into the converter transistor Q. This is a band changeover switch.
本考案によれば単一のダイオードによって発振電圧を制
限することができ実用的である。According to the present invention, the oscillation voltage can be limited by a single diode, which is practical.
尚ダイオード１の極性は両発振回路について逆であるけ
れども当該ダイオードに例等バイアスが掛けられていな
いので作用的に全く問題はなへAlthough the polarity of diode 1 is opposite for both oscillation circuits, there is no problem at all in terms of operation since the diode is not biased.
図面は本考案の発振電圧制限回路を示す結線図である。
主な図番の説明、ダイオード・・・・・・１、スイッチ
・・・・・・８゜The drawing is a wiring diagram showing the oscillation voltage limiting circuit of the present invention. Explanation of main drawing numbers, diode...1, switch...8°
Claims (1)
子をダイオードで連結し、夫々の連結点を切換スイッチ
にて選択的に接地したことを特徴とする複数バンドを受
信するための発振電圧制限回路。An oscillation voltage limiting circuit for receiving multiple bands, characterized in that non-grounded side terminals of LC resonant circuits that determine different oscillation frequencies are connected by diodes, and each connection point is selectively grounded by a changeover switch. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685975U JPS5819854Y2 (en) | 1975-10-27 | 1975-10-27 | Hatsushinden Atsuseigen Cairo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14685975U JPS5819854Y2 (en) | 1975-10-27 | 1975-10-27 | Hatsushinden Atsuseigen Cairo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5258934U JPS5258934U (en) | 1977-04-28 |
| JPS5819854Y2 true JPS5819854Y2 (en) | 1983-04-23 |
Family
ID=28626537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14685975U Expired JPS5819854Y2 (en) | 1975-10-27 | 1975-10-27 | Hatsushinden Atsuseigen Cairo |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819854Y2 (en) |
-
1975
- 1975-10-27 JP JP14685975U patent/JPS5819854Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5258934U (en) | 1977-04-28 |
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