JPS6071116U

JPS6071116U - Coil for multi-stage tuned circuit

Info

Publication number: JPS6071116U
Application number: JP16206583U
Authority: JP
Inventors: 小松　陽一
Original assignee: 日本マランツ株式会社
Priority date: 1983-10-21
Filing date: 1983-10-21
Publication date: 1985-05-20
Also published as: JPH023604Y2

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

[Brief explanation of the drawing]

第１図、第２図は本考案による多段同調回路用コイルの
一実施例を示す要部斜視図、第３図は第２図の等価回路
図、第４図は第２図の多段同調回路用コイルを用いて多
段同調回路を形成した場合の等価回路図である。１・・・・・・プリント基板、１ａ・・・・・・絶縁基
板体、２．３・・・・・・スルーホール、４，５・・・
・・・内周壁、６．７・・・・・・分割環状導電膜、８
，９・・・・・・開口部、６ａ、６ｂ、？ａ、７ｂ＝端
部、１０ａ、１０ｂｔ　　１１　ａｔ　　１１　ｂ−−
−−−−接続導電膜、１２，１３・・・・・・リード線
、１５．１６・・・・・・挿通孔、１４，１７．１Ｂ・
・・・・・シールド板、Ａ・・・用スルーホール２．３
間の間隔、１１・・・・・・１次コイル、１２・・・・
・・２次コイル、Ｌｌ・・・・・・第１の複同調回路用
コイル、Ｌ２・・・・・・第２の複同調回路用コイル。 −第　２　図1 and 2 are perspective views of essential parts showing an embodiment of a coil for a multi-stage tuned circuit according to the present invention, FIG. 3 is an equivalent circuit diagram of FIG. 2, and FIG. 4 is a multi-stage tuned circuit of FIG. 2. FIG. 3 is an equivalent circuit diagram when a multi-stage tuned circuit is formed using a coil for the multi-stage tuning circuit. 1... Printed circuit board, 1a... Insulating board body, 2.3... Through hole, 4, 5...
... Inner peripheral wall, 6.7 ... Divided annular conductive film, 8
, 9...opening, 6a, 6b, ? a, 7b=end, 10a, 10bt 11 at 11 b--
-----Connection conductive film, 12, 13... Lead wire, 15.16... Insertion hole, 14, 17.1B.
...Through hole 2.3 for shield plate, A...
Interval between, 11... Primary coil, 12...
...Secondary coil, Ll... Coil for first double-tuned circuit, L2... Coil for second double-tuned circuit. -Figure 2

Claims

[Scope of utility model registration request]

First and second through-holes having the same diameter, which are bored at a predetermined distance in the insulating substrate body of the printed circuit board, each having an arcuate portion back-to-back on the inner peripheral wall of the first and second through-holes. A primary coil and a secondary coil made of a second divided annular conductive film, and first, second, third, and fourth connection conductors led out from both ends of the first and second divided annular conductive films, respectively. A plurality of double-tuned circuit coils each having the primary coil terminal and the secondary coil terminal made of a film are respectively made into first, second...Nth double-tuned circuit coils,
These double-tuned circuit coils are housed in a stacked state in a single shield case with shield plates interposed between them, and either the primary coil terminal or the secondary coil terminal are connected between the double-tuned circuit coils adjacent to each other, and the first, second, . . .
- A coil for a multi-stage tuned circuit, characterized in that each of the Nth double-tuned circuit coils is connected in series.