This Power supply is intended to Power small loads with currents up to 30 mA. The voltage depends of the zener diode an in this simulation we are using a 3 V diode, found in the Multisim Blue list. Observe that no isolation from the power line exists in this circuit, limiting so te practical applications.

The multimeter in the simulation indicates the output voltage. This indication is for a no load condition. With higher currntes a voltage fall in the outuput will be observed. Try connect zner diodes in series for higher voltages in the output. For instance, two rdiodes will give a 6 V output. Simulation is also made with only 12 V at the input. Chage this voltage to 110 V.








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