JPS60129766U

JPS60129766U - Photo sensor circuit

Info

Publication number: JPS60129766U
Application number: JP1984017303U
Authority: JP
Inventors: 宮崎　喜久次
Original assignee: 日本電気株式会社
Priority date: 1984-02-09
Filing date: 1984-02-09
Publication date: 1985-08-30

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図は本考案の一実施例を示す回路図、第２図は第１
図の各部における波形を示す波形図である。 −１・・・正電極、２・・・負電極、３・・・発光ダイ
オード、４・・・フォトセンサ、Ｒ５・・・負荷抵抗、
Ｒ９・・・コレクタ抵抗、７・・・トランジスタ、Ｒ８
・・・保護抵抗、Ｃ９・ｉ・コンデンサ、１０・・・２
値化回路、１１−・・・出力端子、−１２・・・電源端
子、ａ・・−ＯＮ、ＯＦＦ信□号、ｂ・・・入力のこぎ
り波信号、Ｃ・・・出力パルス信号、Ｔｏ・・・コレク
タ、ＴＢ・・・ベース、ＴＢ・・・エミッタ、■８・・
・電流、■２・・・電流、■８・・・ベース電流、■ア
。・・・コレクタ電圧。Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
FIG. 3 is a waveform diagram showing waveforms at various parts in the figure. -1... Positive electrode, 2... Negative electrode, 3... Light emitting diode, 4... Photo sensor, R5... Load resistance,
R9...Collector resistance, 7...Transistor, R8
...protective resistor, C9・i・capacitor, 10...2
Value conversion circuit, 11-... Output terminal, -12... Power supply terminal, a...-ON, OFF signal □ signal, b... Input sawtooth wave signal, C... Output pulse signal, To... ...Collector, TB...Base, TB...Emitter, ■8...
・Current, ■2...Current, ■8...Base current, ■A. ...Collector voltage.

Claims

[Scope of utility model registration request]

a photosensor, a resistor connected in parallel with the photosensor, a transistor whose base is connected to the anode of the photosensor and whose emitter is grounded, a time constant circuit whose collector is connected to an input terminal; A photosensor circuit comprising: a binarization circuit in which an output terminal of a constant circuit is connected to an input terminal and a cathode of the photosensor is connected to an output terminal.