光电三极管管脚的识别(国外英文资料).docVIP

光电三极管管脚的识别(国外英文资料).doc

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光电三极管管脚的识别(国外英文资料)

光电三极管管脚的识别(国外英文资料) Six, the working principle of photoelectric triode Identification of photoelectric triode tube feet: Step 1: Do the measurement before the multimeter to select range switch R * 1K block, zero, remove the photoelectric triode tube feet for oxide etc.. Step 2: With the objects will be phototransistor light, then multimeter two pen no matter how pin contact with the photoelectric triode, the measured resistance should be infinite; remove the shading objects, and phototriode window Affirmative toward the light, the red pen will contact photoelectric triode e, black one contact collector C, then 000 meter needle should to the right to go to the 10 - 30K, the greater the deflection of the higher sensitivity. A common silicon photoelectric tube with a metal shell package, with epoxy flat style, and a miniature. How to identify the pins? The metal encapsulated metal, following a bump, bump with the leg closest to the emitter E. If the tube is only two feet, so that the foot rest is photoelectric triode collector C; if the pipe is three feet, and then the e foot nearest is the base of the B, e is far from the foot of the collector C. Is this the pin identification method of epoxy flat type, micro phototriode: because these two kinds of tube feet are not the same, so easy to identify the most - long foot as the emitter e short Collector Pin C. If there is a phototriode already used the words on the tube, tube and shell are unrecognizable, even do not know it is a photoelectric triode or photodiode. This is how to identify it? Take a multimeter, dial to R * LK. A test tube is a photoelectric triode (such as 3Du23). First put the tube in a dark place, negative probe connected to collector C, e positive probe connected to the emitter, hands slightly swinging; then the tube is placed in a strong local light, it will be found that the received light is strong, the resistance of the smaller hands instructions have been reduced to thousands of Europe. Then the mu

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