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African Journal of Science and Technology

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Optical Co-Incidence Gate

Avireni Srinivasulu, Kumelachew Baynesagn Kebede

Abstract


The paper explains Optical co-incidence gate, realized using Unijunction transistors (UJT), Light emitting diodes (LED) and Photo-resistors (LDR), which works on 1.8Vdc instead of 3Vdc. The power dissipation of the designed gate is only 3 mW. This optical gate finds application in the field of Mechatronics, Instrumentation and Fiber optics systems where intrinsic safety is of prime importance rather than speed of operation.

Key words: Bistability, Intrinsic safety, and Low speed.


(Af. J. of Science and Technology: 2002 3(2): 114-117)



http://dx.doi.org/10.4314/ajst.v3i2.15275
AJOL African Journals Online