JPH0337688U - - Google Patents
Info
- Publication number
- JPH0337688U JPH0337688U JP8171490U JP8171490U JPH0337688U JP H0337688 U JPH0337688 U JP H0337688U JP 8171490 U JP8171490 U JP 8171490U JP 8171490 U JP8171490 U JP 8171490U JP H0337688 U JPH0337688 U JP H0337688U
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- video signal
- wiring pattern
- input
- wiring
- 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
- 230000005236 sound signal Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmitters (AREA)
Description
第１図は簡易型テレビジヨン用送信装置のブロ
ツク図、第２図は従来例の簡易型テレビジヨン用
送信装置の裏面斜視図、第３図は本考案による簡
易型テレビジヨン用送信装置の裏面斜視図、第４
図Ａ，Ｂは端子ＴＶ，ＴＳ部分における電気的等
価回路図、第５図は第３図の簡易型テレビジヨン
用送信装置の一部を破断した側面図、第６図はコ
ンデンサＣにデイスクリートコンデンサを使用し
た場合の側面図を示す。
１……ケース、３……プリント基板、４……外
部基板、５……ケース開口部、６……コネクタ、
ＴＶ……映像信号供給端子、ＴＳ……音声信号供
給端子、ＶＣＣ……電源供給端子、ＴＯ……出力
端子、ＰＶ，ＰＳ，ＰＣ……配線パターン、Ｇ，
Ｇ１，Ｇ６……アースパターン、５，Ｈ……ケー
ス開口窓、ＣＶ，ＣＳ，ＣＣ……コンデンサ。
FIG. 1 is a block diagram of a simple television transmitter, FIG. 2 is a rear perspective view of a conventional simple television transmitter, and FIG. 3 is a rear view of a simple television transmitter according to the present invention. Perspective view, 4th
Figures A and B are electrical equivalent circuit diagrams of the terminal TV and TS parts, Figure 5 is a partially cutaway side view of the simple television transmitter shown in Figure 3, and Figure 6 is a discrete circuit diagram of the capacitor C. A side view when using a capacitor is shown. 1... Case, 3... Printed circuit board, 4... External board, 5... Case opening, 6... Connector,
TV...video signal supply terminal, TS...audio signal supply terminal, VCC...power supply terminal, TO...output terminal, PV, PS, PC...wiring pattern, G,
G1 , G6 ...Earth pattern, 5, H...Case opening window, CV, CS, CC...Capacitor.
Claims (1)
配線基板の一部をケース外に導出延在してなる外
部基板上に、映像信号供給端子用の配線パターン
及び音声信号供給端子用の配線パターンをケース
内部のプリント配線基板から該外部基板上に延在
させて形成すると共に、前記配線パターンを前記
外部基板の縁部側で包囲するように前記ケース内
のプリント配線基板上のアースパターンから前記
外部基板の縁部に沿つて延在したアースパターン
を有する信号入力端子部を有し、前記映像信号入
力配線パターンとその近傍に形成されたアースパ
ターンとの間及び、前記音声信号入力配線パター
ンとその近傍に形成されたアースパターンとの間
のうちの少なくとも一方にコンデンサを接続し、
前記映像信号入力配線パターンとアースパターン
との間の場合には、そのコンデンサの容量Ｃｖを
、 １／２πｆｖＺｖｏ＞Ｃｖ≫１／２πｆｖｏＺ
ｖｏの範囲（但し、ｆｖは映像信号供給端子に入
力される入力側の最高周波数、ｆｖｏは装置内の
映像信号用発振周波数、Ｚｖｏは映像信号処理回
路側のインピーダンス）とし、 前記音声信号入力配線パターンとアースパター
ンとの間の場合そのコンデンサの容量Ｃｓを、 １／２πｆｓＺｓｏ＞Ｃｓ≫１／２πｆｓｏＺ
ｓｏの範囲（但し、ｆｓは音声信号供給端子に入
力される入力側の最高周波数、ｆｓｏは装置内の
音声信号用発振周波数、Ｚｓｏは音声信号処理回
路側のインピーダンス）としたことを特徴とする
簡易型テレビジヨン用送信装置。[Scope of claim for utility model registration] A wiring pattern for a video signal supply terminal and a wiring pattern for an audio signal supply terminal on an external board formed by leading out and extending a part of the printed wiring board outside the case through a case opening formed by a notch. A wiring pattern is formed by extending from a printed wiring board inside the case onto the external board, and a grounding pattern is formed on the printed wiring board inside the case so as to surround the wiring pattern on the edge side of the external board. a signal input terminal portion having a ground pattern extending from the pattern along the edge of the external board, and between the video signal input wiring pattern and a ground pattern formed in the vicinity thereof, and the audio signal input Connecting a capacitor to at least one of the wiring pattern and a ground pattern formed near the wiring pattern,
In the case between the video signal input wiring pattern and the ground pattern, the capacitance Cv of the capacitor is 1/2πfvZvo>Cv≫1/2πfvoZ
vo (however, fv is the highest frequency on the input side input to the video signal supply terminal, fvo is the oscillation frequency for the video signal in the device, and Zvo is the impedance on the video signal processing circuit side), and the audio signal input wiring is The capacitance Cs of the capacitor between the pattern and the earth pattern is 1/2πfsZso>Cs≫1/2πfsoZ
so (where fs is the highest frequency on the input side input to the audio signal supply terminal, fso is the oscillation frequency for audio signals in the device, and Zso is the impedance on the audio signal processing circuit side). Transmitter for simple television.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8171490U JPH0526832Y2 (en) | 1990-08-02 | 1990-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8171490U JPH0526832Y2 (en) | 1990-08-02 | 1990-08-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337688U true JPH0337688U (en) | 1991-04-11 |
| JPH0526832Y2 JPH0526832Y2 (en) | 1993-07-07 |
Family
ID=31627898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8171490U Expired - Lifetime JPH0526832Y2 (en) | 1990-08-02 | 1990-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526832Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002141811A (en) * | 2000-11-02 | 2002-05-17 | Alps Electric Co Ltd | Television signal transmitter |
-
1990
- 1990-08-02 JP JP8171490U patent/JPH0526832Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002141811A (en) * | 2000-11-02 | 2002-05-17 | Alps Electric Co Ltd | Television signal transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0526832Y2 (en) | 1993-07-07 |
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