Slotted tip control photoelectric control circuit

Published:2011/12/1 1:09:00 Author:May | Keyword: Slotted tip control, photoelectric control | From:SeekIC

Usually, 2CU2B photosensitive diode shuts out light source by slitting carborundum discs tomake relay failure to actuate. But, when slitting carborundum discs is open byseveralor tens of nib ( the number depends on the quality of carborundum discs) , carborundum discs arefret, when itaborts nib, it can not shut out light source ( about 1mm), because 2CU2B has light, it can generate 5~10µA light curret to makeB1, BG2 compositive clad pipe breakover, Schmidt trigger output negative impulse, monostable circuit output positive impulse and BG7 breakover, execution relay action. Then it can drive middle relay and miniature solenoid close once, and theclosed time depends on monostable delay circuit. After slitting carborundum discs shut out light source again, nib slitting continue start, and the action repeats.



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