JPS5850537U - local oscillation circuit - Google Patents
local oscillation circuitInfo
- Publication number
- JPS5850537U JPS5850537U JP14558681U JP14558681U JPS5850537U JP S5850537 U JPS5850537 U JP S5850537U JP 14558681 U JP14558681 U JP 14558681U JP 14558681 U JP14558681 U JP 14558681U JP S5850537 U JPS5850537 U JP S5850537U
- Authority
- JP
- Japan
- Prior art keywords
- local oscillation
- oscillation circuit
- output
- circuit section
- wave broadcasting
- 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
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (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図は従来の局部発振回路を用いたＡＭ受信機を示す
ブロック図、第２図は本考案に係る１局部発振回路の一
例が適用されたＡＭ受信機を示すブロック図である。
゛
図中、３はミキサー回路部、２０は局部発振回路、２１
は第一の局部発振回路部、２２は第二の局部発振回路部
、２２Ｌは発振コイル、２３はイ ′ンダクタンス
、２４．２６はコンデンサ、２５はトランジスタ、２７
は抵抗、２８はスイッチ、□十Ｂは電源端子である。FIG. 1 is a block diagram showing an AM receiver using a conventional local oscillation circuit, and FIG. 2 is a block diagram showing an AM receiver to which an example of one local oscillation circuit according to the present invention is applied.
゛In the figure, 3 is a mixer circuit section, 20 is a local oscillation circuit, 21
22 is a first local oscillation circuit section, 22 is a second local oscillation circuit section, 22L is an oscillation coil, 23 is an inductance, 24.26 is a capacitor, 25 is a transistor, 27
is a resistor, 28 is a switch, and □10B is a power supply terminal.
Claims (1)
信用の第一の局部発振回路部及び中波放送受信用の第二
の局部発振回路部を備え、上記第一の局部発振回路部の
出力端に接続されたバッファ回路部の出力インダクタン
スが、上記第二の局部発振回路部の発振コイルに結合さ
れて、該出力インダクタンスから局部発振出力が導出さ
れる様にされた局部発振回路。The first local oscillation circuit section includes a first local oscillation circuit section for receiving short wave broadcasting and a second local oscillation circuit section for receiving medium wave broadcasting, to which power is selectively supplied via a switch. A local oscillation circuit, wherein an output inductance of a buffer circuit unit connected to an output end is coupled to an oscillation coil of the second local oscillation circuit unit, so that a local oscillation output is derived from the output inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558681U JPS5850537U (en) | 1981-09-30 | 1981-09-30 | local oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558681U JPS5850537U (en) | 1981-09-30 | 1981-09-30 | local oscillation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5850537U true JPS5850537U (en) | 1983-04-05 |
| JPS6211090Y2 JPS6211090Y2 (en) | 1987-03-16 |
Family
ID=29938513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14558681U Granted JPS5850537U (en) | 1981-09-30 | 1981-09-30 | local oscillation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850537U (en) |
-
1981
- 1981-09-30 JP JP14558681U patent/JPS5850537U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6211090Y2 (en) | 1987-03-16 |
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