An A.C supply of 230 V is applied to a half wave rectifier circuit through a transformer of turn ratio    10 : 1. Find the output D.C voltage (approximately)

For Primary Voltage :  RMS Primary Voltage : Vrms=230V,  ∴ Peal Primary Voltage : VP = 2×Vrms ⇒         Vp=2×230V = 325.3 V Primary to Secondary turn ratio of transformer :  VpVs=NpNs         ⇒  325.3Vs=101          ⇒Vs=32.53 V Hence, for half wave rectifier Vdc=Vsπ=32.533.14=10.36 ≃10.4  V