Usually I can pick up most concepts pretty quickly, but EE just makes me feel dumb. Ive managed to grasp most concepts we have covered this semester, except one, diodes. I really dont understand how to determine forward or reverse bias. For example: http://img276.imageshack.us/img276/7519/diode2jw.gif [Broken] Now, I know D1 and D2 are in reverse bias, and D3 is forward biases, so that Vout=-5 + .6 = -4.4V. But I dont understand how any of that was determined. I can manage, sometimes, to correctly complete simple circuits that have one Voltage source, one diode and one resistor. For those simple ones I use the method of assuming a diode state and solving for voltage, but this situation above baffles me. Is there some simple trick that I am missing?