JPS5819546U - AM receiver MW/LW 2 band switching circuit - Google Patents
AM receiver MW/LW 2 band switching circuitInfo
- Publication number
- JPS5819546U JPS5819546U JP11322381U JP11322381U JPS5819546U JP S5819546 U JPS5819546 U JP S5819546U JP 11322381 U JP11322381 U JP 11322381U JP 11322381 U JP11322381 U JP 11322381U JP S5819546 U JPS5819546 U JP S5819546U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- band
- receiver
- switching circuit
- band switching
- 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
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- 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MW/LW2バンド切換回路図、第2図
は本考案MW/LW2バンド切換回路図。
Ll、L2はアンテナ周調用コイル、L3. L4は発
振用コイル、SWlはバンドセレクトスイッチ、sw2
はリレースイッチ。FIG. 1 is a conventional MW/LW two-band switching circuit diagram, and FIG. 2 is a MW/LW two-band switching circuit diagram of the present invention. Ll and L2 are antenna frequency adjustment coils, L3. L4 is the oscillation coil, SWl is the band select switch, sw2
is a relay switch.
Claims (1)
ド用コイルL2を接続して構成[7、発振回路をMWバ
ンド用コイルL3とLWバンド用コイルL4を接続して
なるAM受信機において、バンドセレクトスイッチSW
1がMW側に切換った時にリレースイッチSW2がON
し、コイルL1とコイルL2との2次側接続部がアース
接続すると共に、コイルL3とコイルL4との2次側接
続部がアース接続し、バンドセレクトスイッチSW1が
LW側に切換った時にリレースイッチSW2がOFFし
、前記コイルL1とコイルL2、コイルL3とコイルL
4の両2次側接続部のアース接続が開放されるAM受信
機のMW/LW2バンド切換回路。The antenna tuning circuit is configured by connecting the MW band coil L1 and the LW band coil L2 [7. In an AM receiver in which the oscillation circuit is configured by connecting the MW band coil L3 and the LW band coil L4, the band select switch is SW
When 1 switches to MW side, relay switch SW2 turns on.
However, the secondary side connection between coil L1 and coil L2 is connected to ground, and the secondary side connection between coil L3 and coil L4 is connected to ground, and when band select switch SW1 is switched to the LW side, the relay is activated. Switch SW2 is turned off, and the coil L1 and coil L2, and the coil L3 and coil L are turned off.
MW/LW 2-band switching circuit of an AM receiver in which the ground connections of both secondary side connections of 4 are opened.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11322381U JPS5819546U (en) | 1981-07-29 | 1981-07-29 | AM receiver MW/LW 2 band switching circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11322381U JPS5819546U (en) | 1981-07-29 | 1981-07-29 | AM receiver MW/LW 2 band switching circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5819546U true JPS5819546U (en) | 1983-02-07 |
JPS6236363Y2 JPS6236363Y2 (en) | 1987-09-16 |
Family
ID=29907531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11322381U Granted JPS5819546U (en) | 1981-07-29 | 1981-07-29 | AM receiver MW/LW 2 band switching circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5819546U (en) |
-
1981
- 1981-07-29 JP JP11322381U patent/JPS5819546U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6236363Y2 (en) | 1987-09-16 |
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