The 4N25, 4N26, 4N27 and 4N28 devices consist of a gallium arsenideinfrared emitting
2008-09-01 10:51
The 4N25/ 4N26/ 4N27/ 4N28 consist of a phototransistor optically coupled to a galli
2009-09-08 14:23
三端稳压器不但设计和应用简单方便，而且安全可靠。但它传输大电流负载导线上的压降不能检测和调整。利用光电耦合器就能解决，其电路如图2.1-27所示。从图中可看出，只要把光电耦合器连到三端集成稳压器LM317的调整端，就可完成检测功能。选择R，= 240A，使5mA的恒定电流流过光电耦合器的晶体管，调节R.使负载两端的电压达到所要求的稳压值（12V）。当由于负载电流增加而降低负载电压时，通过光电耦合器的发光二极普的电流会减少，从而驱动晶体
2018-12-05 08:00
The 4N25, 4N26, 4N27 and 4N28 devices consist of a gallium arsenideinfrared emitting
2008-09-01 10:50
4N25/4N26,4N27和4N28器件由砷化镓红外发光二极管和硅光电晶体管检测器光耦
2008-09-01 11:02
4N28 - 6-Pin DIP Optoisolators Transistor Output - Motorola, Inc
2022-11-04 17:22
4N28 - Optocoupler, Phototransistor Output, With Base Connection - Vishay Siliconix
2022-11-04 17:22
4N28 - Optically-Coupled Isolator Optoelectronic Products - New Jersey Semi-Conductor Products, Inc.
2022-11-04 17:22
4N28M - General Purpose 6-Pin Phototransistor Optocouplers - Fairchild Semiconductor
2022-11-04 17:22
