JPS62183434U - - Google Patents
Info
- Publication number
- JPS62183434U JPS62183434U JP7049986U JP7049986U JPS62183434U JP S62183434 U JPS62183434 U JP S62183434U JP 7049986 U JP7049986 U JP 7049986U JP 7049986 U JP7049986 U JP 7049986U JP S62183434 U JPS62183434 U JP S62183434U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- coil
- band
- coils
- oscillation 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
- 230000010355 oscillation Effects 0.000 claims description 17
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案の一実施例を示す図、第２図は
他の実施例を示す図、第３図は従来例を示す図で
ある。
Ｑ１…発振用トランジスタ、Ｌ１，Ｌ２…発振
コイル、Ｄ１，Ｄ２，Ｄ３…スイツチングダイオ
ード、ＣＴ１，ＣＴ２…トリマコンデンサ、ＣＶ
…バリコン。
FIG. 1 shows one embodiment of the present invention, FIG. 2 shows another embodiment, and FIG. 3 shows a conventional example. Q1 ...Oscillation transistor, L1 , L2 ...Oscillation coil, D1 , D2 , D3 ...Switching diode, CT1 , CT2 ...Trimmer capacitor, CV
...varicon.
Claims (1)
数を設定するための第１発振コイルと、この第１
発振コイルと直列に接続された第２バンドの発振
周波数を設定するための第２発振コイルと、この
第１及び第２発振コイルの接続中点に接続され且
つ第１バンド選択信号にて導通せしめられる第１
スイツチング素子と、前記第１及び第２発振コイ
ルの接続中点に接続され且つ第２バンド選択信号
にて導通せしめられる第２スイツチング素子と、
前記第１発振コイルの一端に接続される第１発振
周波数調整用素子と、前記第２スイツチング素子
の導通時、前記第１及び第２発振コイルの接続中
点に接続される第２発振周波数調整用素子と、発
振周波数可変用可変容量素子とよりなる多バンド
受信装置の局部発振回路。 an oscillation transistor, a first oscillation coil for setting the oscillation frequency of the first band, and this first
A second oscillation coil for setting the oscillation frequency of the second band connected in series with the oscillation coil, and a second oscillation coil connected to the connection midpoint of the first and second oscillation coils and made conductive by the first band selection signal. The first to be
a switching element; a second switching element connected to the connection midpoint of the first and second oscillation coils and made conductive by a second band selection signal;
a first oscillation frequency adjustment element connected to one end of the first oscillation coil, and a second oscillation frequency adjustment element connected to a connection midpoint of the first and second oscillation coils when the second switching element is electrically connected; A local oscillation circuit for a multi-band receiver, which includes a variable capacitance element for varying the oscillation frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7049986U JPH054354Y2 (en) | 1986-05-09 | 1986-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7049986U JPH054354Y2 (en) | 1986-05-09 | 1986-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62183434U true JPS62183434U (en) | 1987-11-20 |
| JPH054354Y2 JPH054354Y2 (en) | 1993-02-03 |
Family
ID=30912191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7049986U Expired - Lifetime JPH054354Y2 (en) | 1986-05-09 | 1986-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054354Y2 (en) |
-
1986
- 1986-05-09 JP JP7049986U patent/JPH054354Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054354Y2 (en) | 1993-02-03 |