JPS6261540U

JPS6261540U -

Info

Publication number: JPS6261540U
Application number: JP15350985U
Authority: JP
Priority date: 1985-10-07
Filing date: 1985-10-07
Publication date: 1987-04-16

Description

[Brief explanation of the drawing]

第１図はこの考案による固体リレー回路の一例
を示す回路図、第２図はこの考案による固体リレ
ー回路の動作を説明するための信号波形図、第３
図はこの考案による固体リレー回路の他の例を示
す回路図、第４図は第３図の固体リレー回路の動
作を説明するための信号波形図、第５図は従来の
固体リレー回路の一例を示す回路図、第６図は第
５図の固体リレー回路の動作を説明するための信
号波形図、第７図は従来の固体リレー回路の他の
例を示す回路図、第８図は第７図の固体リレー回
路の動作を説明するための信号波形図、第９図は
従来の固体リレー回路の他の例を示す回路図であ
る。１…入力信号回路、２…負荷回路、３…定電圧
回路、４…シユミツト回路、６…定電流回路、Ｌ
…発光素子、Ｊ…受光素子、Ｅ…電源、Ｍ…負荷
、Ｑ…半導体パワー素子。 Fig. 1 is a circuit diagram showing an example of a solid state relay circuit according to this invention, Fig. 2 is a signal waveform diagram for explaining the operation of the solid state relay circuit according to this invention, and Fig. 3 is a circuit diagram showing an example of a solid state relay circuit according to this invention.
Figure 4 is a circuit diagram showing another example of the solid state relay circuit according to this invention, Figure 4 is a signal waveform diagram for explaining the operation of the solid state relay circuit shown in Figure 3, and Figure 5 is an example of a conventional solid state relay circuit. 6 is a signal waveform diagram for explaining the operation of the solid state relay circuit shown in FIG. 5. FIG. 7 is a circuit diagram showing another example of the conventional solid state relay circuit. FIG. 7 is a signal waveform diagram for explaining the operation of the solid state relay circuit, and FIG. 9 is a circuit diagram showing another example of the conventional solid state relay circuit. 1... Input signal circuit, 2... Load circuit, 3... Constant voltage circuit, 4... Schmitt circuit, 6... Constant current circuit, L
...Light emitting element, J... Light receiving element, E... Power supply, M... Load, Q... Semiconductor power element.

Claims

[Scope of utility model registration request]

An input signal circuit having a light emitting element connected between a pair of input terminals that emits light upon application of an input signal, and a semiconductor power element connected in parallel to a series circuit of a power supply and a load, and a light emitting element emitting light from the light emitting element. In a solid state relay circuit comprising a load circuit having a light receiving element that receives light and applies a trigger signal to the semiconductor power element, the input signal circuit includes a constant voltage circuit that outputs a constant voltage, and this constant voltage circuit. A solid-state relay comprising: a Schmitts circuit that outputs an output when the output from the Schmitts reaches a reference voltage; and a constant current circuit connected to the output side of the Schmitts circuit to control the amount of current applied to the light emitting element. circuit.