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Q. Biasing the BJT?
A simple method of biasing the BJT is shown in Figure. While no general biasing procedure that will work in all cases can be outlined, a reasonable approach is to assign 1/2 VCC as the drop across the transistor, 3/8 VCC as the drop across RC to allowan adequate ac voltage swing capability in the collector circuit, and 1/8 VCC as the drop across RE, so that RE is about 1/3 RC. With a speci?ed supply voltage VCC, biasing consists mainly of selecting values for VCEQ, ICQ, and IBQ = ICQ/β, which de?ne the operating Q point. One can then select
Consider the common-emitter BJT circuit shown in Figure (a). The static characteristics of the npn silicon BJT are given in Figure (b) along with the load line. Calculate iB for v
Solution for dc motor speed and position controller
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1.) A three phase, D0 HP, 1765 rpm, BA0 V induction motor operating at three quarter load has an efficiency of 91% and a power factor of 87%. Determine active power, apparent pow
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