JPS609352U

JPS609352U - isolator

Info

Publication number: JPS609352U
Application number: JP1983100663U
Authority: JP
Inventors: 中山　芳信
Original assignee: 三菱電機株式会社
Priority date: 1983-06-29
Filing date: 1983-06-29
Publication date: 1985-01-22

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図は従来のトランスを用いたアイソレータを示すブ
ロック図、第２図はトランスを用いた例の各部の信号波
形図、第３図は従来のＬＥＤとホトトランジスタを用い
たアイソレータのブ七ツク図、第４図、第５図はＬＥＤ
とホトトランジスタを用いた例の各部の信号波形図、第
６図はこの考案の実施例のアイソレータを示すブロック
図、第７図はこの考案の各部の信号波形図である。図中１．２は電気装置、３はトランス（−次側）、４は
トランス（二次側）、５はＬＥＤ、　５は光、７はホト
トランジスタ、８は第１の整合回路、９は第２の整合回
路、１０は合成回路である。なお、図中、相当部分には同一符号を付しである。第４図第５薗第７図第６図Figure 1 is a block diagram showing an isolator using a conventional transformer, Figure 2 is a signal waveform diagram of each part of an example using a transformer, and Figure 3 is a block diagram of an isolator using a conventional LED and phototransistor. Figures 4 and 5 are LEDs.
FIG. 6 is a block diagram showing an isolator of an embodiment of this invention, and FIG. 7 is a signal waveform diagram of various parts of this invention. In the figure, 1.2 is an electrical device, 3 is a transformer (-side), 4 is a transformer (secondary side), 5 is an LED, 5 is a light, 7 is a phototransistor, 8 is a first matching circuit, and 9 is a The second matching circuit 10 is a combining circuit. In the drawings, corresponding parts are given the same reference numerals. Figure 4 Figure 5 Sono Figure 7 Figure 6

Claims

[Scope of utility model registration request]

An isolator that transmits signals from one electrical device to another includes a light emitting element that converts the input current applied from one electrical device into an optical signal, and a light emitting element that converts changes in magnetic flux due to changes in the input current into an electrical signal. a photoelectric conversion element that converts an optical signal emitted by the light emitting element into an electrical signal; a first matching circuit that electrically matches the output of the transformer; and a first matching circuit that electrically matches the output of the charging conversion element. 2 matching circuit, and the output of the first matching circuit,
An isolator characterized by having a combining circuit that combines the output of the second matching circuit and introduces the combined output to the other electrical device.