Thank you very much for that awesome explanation, it really helps me understanding the saturation resion intuitively.

Originally Posted by audioguru

There is no reason to look at Vbc if you know the Vbe and the Vce which are on the datasheet.
Vbc is simply the Vbe minus the Vce.

Hi audio,


Yes, and when i open a window for some fresh air ventilation in the summer
months i always calculate how far it has opened by subtracting the part that
is still closed from the height of the whole window :-)

Seriously though, programmatically it is either:

"if Q1>Vbc then"

or:

"if Q1>(Vbe-Vce)"


But then again sometimes Vbc is a directly measured quantity.