Hello Guys,
So I have designed this circuit as a transistor switch, where if you increase the resistor 1k, the red led would dim dramatically.
The problem is I just can't find the answer to: The current through the 1k ohm = 8.19mA, and current through the Q1= 8.03, and Q2 is roughly= 160uA. How is the current distributed between the transistors? I can't apply the current divider formula into this. How can I calculate the current through Q1, and Q2?