I'm using a BC557 transistor to control a LED and a uC to control the transistor. The transistor itself is controlled using a voltage divider.
It was suggested to me to use resistors around 100K + 10K for the divider but I'm curious as to how do I figure out what the best resistor values would be? The system is supposed to run on battery so I guess that the lower the current draw, and if that is the case then why not use essentially infinite Ohm resistors for the divider?
I have looked through the datasheet but it does not seem to mention a minimum base current.