JPS6098920U - Up-down converter - Google Patents
Up-down converterInfo
- Publication number
- JPS6098920U JPS6098920U JP19091683U JP19091683U JPS6098920U JP S6098920 U JPS6098920 U JP S6098920U JP 19091683 U JP19091683 U JP 19091683U JP 19091683 U JP19091683 U JP 19091683U JP S6098920 U JPS6098920 U JP S6098920U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency band
- down converter
- frequency signal
- coil
- 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
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Control Of Motors That Do Not Use Commutators (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図は本考案になるアップダウンコンバータの一実施
例の分解斜視図、第2図は第1図示のコンバータの一部
の断面図、第3図は第1図示のコンバータの一部の等価
回路、第4図は第3図示の回路の選択特性を示す図、第
5図は本考案コンバータに適用されるアップダウンコン
バータノー例のブロック系統図である。
1・・・ケース、2〜4・・・側板、?a、7b・・・
端子、9・・・プリント基板、10〜17・・・シール
ド板、18〜24,26,28,29・・・区画室、2
5a、25b、27a〜27c・・・ヘリカルコイル、
30・・・内カバー、31・・・折曲片、32〜36・
・・折曲片群、37.42・・・開口窓、38,43・
・・貫通L 45 a、 45 b・・・コイルボビ
ン、46ay46b・・・コイル、49a、49b・・
・コイルケース、50 at 50 b””結合窓、
51a、51b・・・ネジコア、−〇・・・入力フィル
タ回路、60・・・第1局部発振器、62.67・・・
増幅器、63・・・第1混合器、64・・・第1複同調
回路、66・・・第2複同調回路、67・・・第2混合
器、68・・・第2局部発振器、69・・・出力フィル
タ回路、70・・・分周器、71・・・位相比較器、7
2・・・発振器、74・・・可変分周器、75・・・低
減フィルタ。Fig. 1 is an exploded perspective view of one embodiment of the up-down converter according to the present invention, Fig. 2 is a sectional view of a part of the converter shown in Fig. 1, and Fig. 3 is an equivalent part of the converter shown in Fig. 1. FIG. 4 is a diagram showing selection characteristics of the circuit shown in FIG. 3, and FIG. 5 is a block diagram of an example of an up-down converter applied to the converter of the present invention. 1...Case, 2-4...Side plate, ? a, 7b...
Terminal, 9... Printed circuit board, 10-17... Shield plate, 18-24, 26, 28, 29... Compartment, 2
5a, 25b, 27a to 27c...helical coil,
30...Inner cover, 31...Folded piece, 32-36.
...Folded piece group, 37.42...Opening window, 38,43.
...Penetration L 45 a, 45 b...Coil bobbin, 46ay46b...Coil, 49a, 49b...
・Coil case, 50 at 50 b"" combined window,
51a, 51b...Screw core, -〇...Input filter circuit, 60...First local oscillator, 62.67...
Amplifier, 63... First mixer, 64... First double tuned circuit, 66... Second double tuned circuit, 67... Second mixer, 68... Second local oscillator, 69 ... Output filter circuit, 70 ... Frequency divider, 71 ... Phase comparator, 7
2... Oscillator, 74... Variable frequency divider, 75... Reduction filter.
Claims (1)
波信号と混合して該ケーブルテレビジョン信号の周波数
帯域より高い一定周波数帯域の中間周波信号とし、該中
間周波信号を同調選択した後第2の局部発振周波信号と
混合して該中間周波信号の周波数帯域より低い一定周波
数帯域のテレビジョン信号とするアップダウンコンバー
タにおいて、該中間周波信号の同調選択を行なう複同調
回路を、コイルを巻回されたコイルボビンに金属のコイ
ルケースをかぶせた複数のヘリカルコイルで構成してな
るアップダウンコンバータ。mixing an incoming cable television signal with a first local oscillator frequency signal into an intermediate frequency signal of a fixed frequency band higher than the frequency band of the cable television signal; In an up-down converter that mixes with a local oscillation frequency signal to produce a television signal in a constant frequency band lower than the frequency band of the intermediate frequency signal, a double-tuned circuit for selecting the tuning of the intermediate frequency signal is wound around a coil. An up-down converter consists of multiple helical coils, each of which is a coil bobbin covered with a metal coil case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1983190916U JPH062379Y2 (en) | 1983-12-09 | 1983-12-09 | Up-down converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1983190916U JPH062379Y2 (en) | 1983-12-09 | 1983-12-09 | Up-down converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6098920U true JPS6098920U (en) | 1985-07-05 |
JPH062379Y2 JPH062379Y2 (en) | 1994-01-19 |
Family
ID=30411245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1983190916U Expired - Lifetime JPH062379Y2 (en) | 1983-12-09 | 1983-12-09 | Up-down converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH062379Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5811044U (en) * | 1981-07-07 | 1983-01-24 | ワイケイケイ株式会社 | deck wood |
-
1983
- 1983-12-09 JP JP1983190916U patent/JPH062379Y2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5811044U (en) * | 1981-07-07 | 1983-01-24 | ワイケイケイ株式会社 | deck wood |
Also Published As
Publication number | Publication date |
---|---|
JPH062379Y2 (en) | 1994-01-19 |
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