JPS63163030U

JPS63163030U -

Info

Publication number: JPS63163030U
Application number: JP5616587U
Authority: JP
Priority date: 1987-04-14
Filing date: 1987-04-14
Publication date: 1988-10-25

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の実施例に係り、
第１図は本考案の実施例の回路図、第２図は第１
図のＮＯ／ＮＣ切換回路の具体回路図、第３図は
第２図と同様に第１図のＮＯ／ＮＣ切換回路の他
の具体回路図である。第４図ないし第６図は従来
例に係り、第４図は従来例の一例を示す回路図、
第５図は他の従来例の要部回路図、第６図はさら
に他の従来例の要部回路図である。２３…検出回路、２４…ＮＯ／ＮＣ切換回路、
２５…出力回路、２６…出力端子、２７，２８…
直流電源端子、２９，３２…抵抗、３０…トラン
ジスタ、３１…定電圧ダイオード、３４…ヒユー
ズ。 Figures 1 to 3 relate to embodiments of the present invention,
Figure 1 is a circuit diagram of an embodiment of the present invention, and Figure 2 is a circuit diagram of an embodiment of the present invention.
FIG. 3 is a specific circuit diagram of the NO/NC switching circuit shown in FIG. 1, and FIG. 3 is another specific circuit diagram of the NO/NC switching circuit shown in FIG. 1, similar to FIG. 4 to 6 relate to conventional examples, and FIG. 4 is a circuit diagram showing an example of the conventional example,
FIG. 5 is a circuit diagram of a main part of another conventional example, and FIG. 6 is a circuit diagram of a main part of still another conventional example. 23...Detection circuit, 24...NO/NC switching circuit,
25...Output circuit, 26...Output terminal, 27, 28...
DC power supply terminal, 29, 32...resistor, 30...transistor, 31...constant voltage diode, 34...fuse.

Claims

[Claims for Utility Model Registration] (1) A detection circuit, an output circuit that receives a detection output output from the detection circuit and generates an output signal, an output terminal for the output signal, and two DC power supply terminals. and a normally open/normally closed switching circuit that switches the output mode of the output circuit to either a normally open or normally closed output mode, and the normally open/normally closed switching circuit is configured to switch between the two direct currents. connected between the power terminals, and
It includes a series circuit composed of a resistor and a switching element, and a voltage/current control element that controls the voltage or current applied to the switching element, and the DC power supply is connected in a first polarity direction between the two DC power supply terminals. When connected, the voltage/current control element inputs a first switching voltage/current corresponding to the first polarity to the switching element, and also inputs the first switching voltage/current between the two DC power supply terminals. When the DC power source is connected in a second polarity direction opposite to the polarity of When the first switching voltage/current is input, the switching element provides a normally open mode switching signal to the detection circuit, and when the second switching voltage/current is input, the switching element applies a normally open mode switching signal to the detection circuit. , an electronic switch characterized in that a normally closed mode switching signal is applied to the detection circuit. (2) The utility model registration claim 1, wherein the switching element is composed of a transistor, and the transistor is configured to be destroyed by the input of the first or second switching voltage/current. Electronic switch described in . (3) The switching element is composed of a fuse, and the fuse has a first or second switching voltage.
The electronic switch according to claim 1, wherein the electronic switch is configured to be fused by inputting an electric current.