JPS61126740U

JPS61126740U -

Info

Publication number: JPS61126740U
Application number: JP993285U
Authority: JP
Priority date: 1985-01-29
Filing date: 1985-01-29
Publication date: 1986-08-08

Description

[Brief explanation of the drawing]

第１図は本考案による実施例の構成を示すブロ
ツク図、第２図は従来の電流検出回路を適用した
構成例を示すブロツク図、第３図は、第２図の従
来例におけるカレントトランスの構造を示す斜視
図である。図において、２―１〜２―４は増幅段、４は電
池、５は電源スイツチ、６―１〜６―４はカレン
トトランス、７―１〜７―４は高抵抗、８―１〜
８―４，１０は波形処理回路、９は制御回路であ
る。 FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention, FIG. 2 is a block diagram showing a configuration example to which a conventional current detection circuit is applied, and FIG. 3 is a block diagram showing a configuration example to which a conventional current detection circuit is applied. FIG. 3 is a perspective view showing the structure. In the figure, 2-1 to 2-4 are amplification stages, 4 is a battery, 5 is a power switch, 6-1 to 6-4 are current transformers, 7-1 to 7-4 are high resistances, 8-1 to
8-4 and 10 are waveform processing circuits, and 9 is a control circuit.

Claims

[Scope of utility model registration request]

In order to prevent the occurrence of overcurrent conditions, multiple current transformers are connected in series with the primary sides of multiple current circuits to be protected, and the secondary sides of these current transformers are connected in series. and one waveform processing circuit connected to the input side and transmitting overcurrent information to the output side when an overcurrent condition occurs in at least one of the plurality of current circuits. Current detection circuit for overcurrent protection.