It has been observed in simulations that to obtain a good isolation between the outputs also at the lower frequency end the inductance of each winding of the output transformer (Tr2) should be the same as t.
Mains electricity varies in voltage and AC frequency across the world. As shown in the adjacent map and in the table below, premises in most of the world receive a supply of between 220–240 (nominal) at an AC frequency of 50. North America is the biggest exception. With the notable exception of North America, premises around the world receive eith.
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