Primary winding of miniature transformer - gives high resistance against voltage fluctuations

摘要

The primary winding (3) consisting of a coil of W turns of lacquered copper wire of dia. d. It has a resistance R and gives an inductance In at voltage U and occupies volume V. While maintaining the values R, In, U and V, an increase of stability against voltage fluctuations is achieved by using a coil of 0.15 W to 0.25 W turns made of lacquered resistance wire of dia. 2d so that voltage U, resistance R and inductance In remain constant. The increase in stability is achieved by using the larger dia. wire and thicker insulation. An increase in volume V is avoided by using resistance wire. USE/ADVANTAGE - Primary winding of miniature transformer with high resistance against voltage fluctuation.