Full Wave Rectifier With Zener Regulator :
what is the maximum load current the zener regulator can supply? given that Iz(min)=5mA(current through zener diode) and the maximum power dissipation in the zener is (1/2)W.
Normally, the zener is connected in parallel with the load; it tends to maintain a constant voltage across the load. The zener is protected by a series resistor through which the zener and load current flows. If the load is removed, all of the current flows through the zener diode. There, the load current should be less than the current rating of the zener diode. Also, the power rating of the zener should not be exceeded.
Actually, the simple zener diode regulator is not good for heavy loads.
Izmin is the current required for the zener to regulate properly.
I hope this INFO is helpful.