I just prototyped a circuit using this: http://www.falstad.com/circuit/circuitjs.html?startCircuit=ohms.txt http://www.falstad.com/circuit/circuitjs.html?startC

I just prototyped a circuit using this: http://www.falstad.com/circuit/circuitjs.html?startCircuit=ohms.txt http://www.falstad.com/circuit/circuitjs.html?startCircuit=o... I didn't find it to be ancient at all, and when I put it on a breadboard it worked exactly as the simulator ran it. Very helpful.