JPH037620U

JPH037620U -

Info

Publication number: JPH037620U
Application number: JP9792489U
Authority: JP
Priority date: 1989-02-13
Filing date: 1989-08-24
Publication date: 1991-01-24

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例に係る落雷保護
回路の回路構成図、第２図ａ〜ｃは落雷発生時に
流れる電流のルートを示す説明図、第３図は本考
案の第２の実施例における電源接続図、第４図は
その実施例での電源プラグとコンセントの説明図
、第５図は本考案の第３の実施例における電源・
回線接続図、第６図はその実施例での電源プラグ
とコンセントの説明図、第７図は本考案の第４の
実施例における落雷保護回路図、第８図ａは本考
案の第５の実施例における電源プラグの外観斜視
図、同図ｂはその電源プラグを挿入するコンセン
トの正面図、第９図ａ〜ｄは落雷保護回路の回路
構成の他の実施例を示す回路図である。１……電源プラグ、２……スイツチ、３……バ
リスタ、４……ヒユーズ、５……ノイズフイルタ
、６……電源回路、７，９……アレスタ、８……
トランス、１０，１７ｂ……フアクシミリ回路、
１１……機器、１１ａ，１７ａ……電源回路、１
２……電源コード、１３，１８，２３……電源プ
ラグ、１４，１９，２４……コンセント、１５ａ
〜１５ｅ……落雷保護素子、１６……ケーブル、
１７……フアクシミリ装置、２１……プラグ、２
２……ジヤツク。 Fig. 1 is a circuit configuration diagram of a lightning protection circuit according to the first embodiment of the present invention, Figs. FIG. 4 is an explanatory diagram of the power plug and outlet in the third embodiment of the present invention. FIG. 5 is a power supply connection diagram in the third embodiment of the present invention.
Line connection diagram, Figure 6 is an explanatory diagram of the power plug and outlet in this embodiment, Figure 7 is a lightning protection circuit diagram in the fourth embodiment of the present invention, and Figure 8a is the fifth embodiment of the present invention. FIG. 9b is a front view of an outlet into which the power plug is inserted, and FIGS. 9a to 9d are circuit diagrams showing other embodiments of the circuit configuration of the lightning protection circuit. 1...Power plug, 2...Switch, 3...Varistor, 4...Fuse, 5...Noise filter, 6...Power circuit, 7, 9...Arrester, 8...
Transformer, 10, 17b...facsimile circuit,
11...Equipment, 11a, 17a...Power circuit, 1
2... Power cord, 13, 18, 23... Power plug, 14, 19, 24... Outlet, 15a
~15e...Lightning protection element, 16...Cable,
17...Facsimile device, 21...Plug, 2
2...Jack.

Claims

[Scope of Claim for Utility Model Registration] (1) A lightning protection circuit installed between a communication line and the internal circuit of a device, which is equipped with a switch circuit that disconnects the communication line when the device is powered off. A lightning protection circuit characterized by: (2) In the case of a lightning protection circuit installed in a device that supplies power by inserting a power plug attached to one end of the power cord pulled out from the device into a power outlet, the lightning protection circuit is installed inside the above power plug. A lightning protection circuit characterized in that: (3) In a lightning protection circuit installed in a device that supplies power by inserting a power plug attached to one end of the power cord drawn out from the device connected to the communication line into a power outlet, the communication line is A lightning protection circuit is connected to the device together with a power cord via a plug, and the lightning protection circuits for the communication line and power supply are disposed within the power plug. (4) In a lightning protection circuit for equipment in which a power outlet and a connector connected to a communication line are fixed at a fixed location, and when power is taken from the power outlet, the communication line is connected via the connector.
A lightning protection circuit characterized in that each of the lightning protection circuits for the communication line and for the power supply is fixed at the fixed location.