22 September 2015 21 10K Report

As a rule, the BJT common-emitter output characteristics are presented as a function of the collector current IC of two variables - the collector-emitter voltage VCE and the base current IB; IC = f(VCE, IB). The base current serves as a parameter to obtain a family of characteristics.

But we know (and discussed many times) that actually the collector current is controlled sooner by the base-emitter voltage than the base current. Then why not use the base-emitter voltage instead of the base current when measuring output characteristics of the bipolar transistor - IC = f(VCE, VBE)?

Maybe we should use one or the other characteristic, depending on how we drive the transistor - by current or voltage. Or maybe it does not matter?

This question is dual to the question about CB stage:

https://www.researchgate.net/post/Why_do_we_use_Ie_instead_Ve_as_a_parameter_when_measuring_common-base_output_characteristics

More Cyril Mechkov's questions See All
Similar questions and discussions