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For a power transistor, if base current IB is increased keeping Vce constant;then______(a) IC increases(b) IC decreases(c) IC remains constant(d) ICchanges sinusoidalI had been asked this question in my homework.My question is taken from Power BJTs topic in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

Answer»

Right answer is (a) IC increases

The best I can explain: IBis directly PROPORTIONAL to Ic. The IC CURVE is linearly distributed when using IB as a parameter, and exponentially distributed using VBE as a parameter. So when VBE is CONSTANT, the transistor current IC is almost linear with respect to IB.



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