I am thinking about setting up this circuit but have a few questions. It is a bit more complicated then the circuit that I originally intended to use. They may seem simple questions but I am a still rookie here. 1. What is the -10 on Q1 and Q2. Does that mean that I will have two -10v supplies? 2. Can someone recommend a resistor rating or part number for Rsc? Is a "current sense resistor" the same as a "current shunt resistor"? 3. Do I have to use electrolytic caps for the 0.1uF and 10uF or is there a better option?