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Edc Lab Manual - Free ebook download as PDF File (.pdf), Text File (.txt) or read book Photodiode, Phototransistor characteristics and study of light DC Characteristics of Fiber Optic LEDs, PIN Photodiode and Phototransistor. LABORATORY MANUAL: TESTER LPS04. 0. Introduction. 0.1 Tester LPS04. Phototransistor is basically a photodiode with amplification and operates by exposing its base region to the light source. Phototransistor light sensors operate In effect, the photodiode functions exactly like a solar cell by generating a current and voltage when exposed to light. 5.3.3 Phototransistor: Photo-Transistor 1) To show that current through a photodiode increases as the light falling on the device increases. 2) To verify that current through a phototransistor varies Emitter/detector pairs might use a phototransistor in place of a photodiode. The performance is similar except that photodiodes tend to have a quicker response Familiarize with the construction and operation of photo Transistors, using. Infrared LED and photo Diode, and Transistor, we can make a photo Transistor also i EC1009 ELECTRON DEVICES LAB LABORATORY MANUAL SEMESTER III DEAPRTMENT OF ELECTRONICS AND Characteristics of LDR, Photo-diode and Photo transistor. 4.Photodiode. A photodiode is a standard diode packaged so that light can shine on the p-n junction. The standard diode equation is: I = Io exp.