JPH036316U - - Google Patents
Info
- Publication number
- JPH036316U JPH036316U JP6554889U JP6554889U JPH036316U JP H036316 U JPH036316 U JP H036316U JP 6554889 U JP6554889 U JP 6554889U JP 6554889 U JP6554889 U JP 6554889U JP H036316 U JPH036316 U JP H036316U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- led out
- end surface
- surface side
- spectacle
- 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
- 238000004804 winding Methods 0.000 claims 6
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Filters And Equalizers (AREA)
- Electronic Switches (AREA)
Description
第１図はこの考案の実施例を示す配線図、第２
図は第１図の近似的な等価回路図、第３図は第１
図の精密な等価回路図、第４図及び第５図はそれ
ぞれ第１図の実施例の挿入損失周波数特性及び不
整合減衰量周波数特性の一例を示す図、第６図は
ＲＦスイツチ回路を中心として示したビデオテー
プレコーダのブロツク図、第７図は従来のＲＦス
イツチ回路の回路図である。
Figure 1 is a wiring diagram showing an embodiment of this invention, Figure 2 is a wiring diagram showing an embodiment of this invention.
The figure is an approximate equivalent circuit diagram of Figure 1, and Figure 3 is an approximate equivalent circuit diagram of Figure 1.
Figures 4 and 5 are diagrams showing an example of the insertion loss frequency characteristics and mismatch attenuation frequency characteristics of the embodiment shown in Figure 1, respectively, and Figure 6 is a diagram centered on the RF switch circuit. 7 is a block diagram of a video tape recorder shown as . FIG. 7 is a circuit diagram of a conventional RF switch circuit.
Claims (1)
タとを有するＲＦスイツチ回路であつて、 上記第１、第２巻線は、上記眼鏡形コアの一方
の端面側よりその第１貫通孔に挿入され、他方の
端面側より外部に導出された後折り返されて、上
記眼鏡形コアの第２貫通孔に挿入されて上記一方
の端面側より外部に導出され、 上記一方の端面側において、上記第１貫通孔よ
り導出される上記第２巻線と、上記第２貫通孔よ
り導出される第１巻線とはより合わされて上記ト
ランジスタのコレクタに接続され、 そのトランジスタのエミツタは接地され、ベー
スは制御端子に接続され、 上記一方の端面側において、上記第１貫通孔よ
り導出される上記第１巻線がＲＦ信号の入力端子
に接続され、上記第２貫通孔より導出される上記
第２巻線がＲＦ信号の出力端子に接続され、 上記制御端子に与える制御信号がオン及びオフ
にされて、上記入力端より出力側への伝送がそれ
ぞれ阻止状態及び通過状態とされることを特徴と
する、 ＲＦスイツチ回路。[Claims for Utility Model Registration] An RF switch circuit including a spectacle-shaped core, first and second windings, and a transistor, wherein the first and second windings are connected to one of the spectacle-shaped cores. It is inserted into the first through hole from the end surface side, led out from the other end surface side, and then folded back, inserted into the second through hole of the spectacle-shaped core, and led out from the one end surface side. , on the one end surface side, the second winding led out from the first through hole and the first winding led out from the second through hole are twisted together and connected to the collector of the transistor, The emitter of the transistor is grounded, the base is connected to a control terminal, the first winding led out from the first through hole is connected to the RF signal input terminal on the one end surface side, and the second The second winding led out from the through hole is connected to the RF signal output terminal, and the control signal applied to the control terminal is turned on and off, so that transmission from the input terminal to the output side is inhibited and disabled, respectively. An RF switch circuit characterized in that it is in a pass state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6554889U JPH036316U (en) | 1989-06-05 | 1989-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6554889U JPH036316U (en) | 1989-06-05 | 1989-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036316U true JPH036316U (en) | 1991-01-22 |
Family
ID=31597474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6554889U Pending JPH036316U (en) | 1989-06-05 | 1989-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036316U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142451A (en) * | 1974-10-08 | 1976-04-10 | Nippon Electric Co | KOSHUHARITOKUSEIGYOKAIRO |
| JPS5823423B2 (en) * | 1978-08-24 | 1983-05-14 | 吉田 輝男 | Soft writing composition |
-
1989
- 1989-06-05 JP JP6554889U patent/JPH036316U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5142451A (en) * | 1974-10-08 | 1976-04-10 | Nippon Electric Co | KOSHUHARITOKUSEIGYOKAIRO |
| JPS5823423B2 (en) * | 1978-08-24 | 1983-05-14 | 吉田 輝男 | Soft writing composition |
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