1. The problem statement, all variables and given/known data A zener diode D1 is specified to have Vz=3.8V and a knee current of 100 microamps. It is used as a shunt regulator where the minimum load resistance is 6.2k. What is the minimum power source that ensures that the shunt regulator remains regulated? 2. Relevant equations Vz=(Vzo)+(Iz)(Rz) 3. The attempt at a solution I have spent the last hour trying to solve this one, but regardless of how I approached it I could not determine what Vz0 is. If a diode is spezified at Vz=3.8V, and the current its specified at is not given, do we assume this is the knee voltage, or what?