DESCRIPTION

The H21A_ and H22A_ series of opaque photointerrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN silicon photo transistor mounted in a polycarbonate housing. The

package is designed to optimise the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. Operating on the principle that objects opaque to infrared will interrupt the transmission of light between an infrared emitting diode and a photo sensor switching the output from an ON state to an

OFF state.

FEATURES

High Gain

3mm Gap between LED and Detector

Polycarbonate case protected against ambient light

APPLICATIONS

Copiers, Printers, Facsimilies, Record Players, Casette Decks, Optoelectronic Switches

H21A2属于传感器，变送器 > 光学传感器 - 光电遮断器 - 槽型 - 晶体管输出。Isocom Components 2004 LTD制造生产的H21A2光学传感器 - 光电遮断器 - 槽型 - 晶体管输出具有晶体管输出的槽型光断续器是利用内置红外光源和以气隙（槽）隔开的光电二极管的光学传感器模块。当致动器、液体或其他检测物体挡住光源时，将打开或关闭输出晶体管，从而切换施加的电压。安装方式包括底座、卡入、表面、自由悬挂和通孔安装。