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(a) A student wantsto use tow p-n junction diodes toconvert alternating current intodirectcurent drawthe labelled circuit diagram she would use and explain how it works (b) give the truth table and circuit symbol for NAND gate |
Answer» Solution :The labeled circuit diagram ,for the required circuit is as shown  The working of this circuits is as follows (i) During ONE half cycle (of the input ac) diode ` D_1 ` alone gets forward biased and conducts. During the other half cycle. it is aodel `D_2` (alone ) that conducts. Because of the use of the center tapped TRANSFORMER the current though the lead flows in the same DIRECTION in both the half cycles. Hence we get a unidirectional /direct current through the LOAD , when the input as altermating current [Altermatively : The student may just use the FOLLOWING diagrams to explain the working.] ` (##DBT_SM_PHY_XII_DL_18_E02_026_S02##) ` |
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