When the transistor is 'on' (either active or saturated), the base-emitter junction is forward biased and, hence, has a voltage of about 0.7V (but this can vary quite a bit depending on how large the areas of the junction are and how much current is actually flowing, but 0.7V is a good back-of-the-envelope figure to use an most situations).in transistors, why the collector to emitter voltage VCE is 0.2V in saturation? why is it not 1.4V? because both emitter-base voltage and collector-base voltage is 0.7V.
by Aaron Carman
by Jake Hertz
by Jake Hertz