Off the top of my head .....aaaaaaaaaaaaaaaaaa......I just need help with deriving the equations.
There are times when I use a soldering iron and just try resistors. 10k=no, 12k=maybe, 22k=works, 30k=no.Now you see why I prefer to let the simulator do it for me...
w=0.4 on the first pass and w=0.8 in the last try. "list".step param w LIST .4 .5 .6 .7 .8
You are going to get it. Actually it is quite simple. Just an application of the node method. I used a computer program to solve the equations, but it is not much more difficult with a hand calculator. Although is is not necessary to worry about the output of the op amp because the high resistance of R6, I will include it anyway. Even though the op amp cannot go up/down to the full 12 volts, I will use that voltage regardless. All six equations have only one unknown, so the solutions are simple. Here goes.I understand the circuit operation, I just need help with deriving the equations.