abstract : Bibliography: New Electronic Transformer P450 (450) is calculated according to the formula, where η is the efficiency of the transformer, dimensionless; R2 is the secondary load impedance of transformer, Ω; Ra is the load impedance of the single ended amplifier of the general transformer, or the load impedance from one arm of the amplifier to the other arm of the push-pull transformer, Ω; N is the transformer
