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When the β value is large for a given transistor, the IC and VCE values are given by_________

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When the β value is large for a given transistor, the IC and VCE values are given by_________

(a) (VCC-VBE)/RB, VCC-RCIC

(b) (VCC+VBE)/RB, VCC-RC(IC+IB)

(c) (VCC+VBE)/RB, VCC+RC(IC+IB)

(d) (VCC+VBE)/RB, VCC+RC(IC-IB)

I have been asked this question by my college professor while I was bunking the class.

This interesting question is from Collector-to-Base Bias topic in division Transistor Biasing and Thermal Stabilization of Electronic Devices & Circuits

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The correct choice is (a) (VCC-VBE)/RB, VCC-RCIC

The explanation is: The base current IB is zero when β value is large. So, the VCE changes to VCC-RCIC. The collector current IC is changed to (VCC-VBE)/RB from β(VCC-VBE)/(1+ β)RE+ RB.

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