Hi everyone. I'm wanting to do something, I'm having trouble simulating due to simulator imperfections. I want to design a discrete 2 transistor regulator like this: Problem is when I plug it into the simulator with a 50 ohm load the "regulating" part of the circuit doesn't show voltage spikes and dips. Can I use a circuit like this to supply current even though it's a voltage regulator? Or is there better designs for this? If I use a Darlington/heat sink transistor will it supply bias current to our favorite rf transistors?