SU886071A1 - Transformer - Google Patents

Description

(54) TRANSFORMER

The invention relates to electrical engineering, to; devices that convert voltages and currents, particularly to pulsed broadband transformers.

A high-frequency transformer is known mainly for transistor two-stroke power amplifiers, consisting of a toroidal core with primary and secondary windings arranged on it, made of copper tape, covered with a dielectric layer. In this transformer, in particular, in order to reduce the leakage inductance, each half-winding of the primary circuit is made in the form of parallel-connected parts, and each turn of the secondary winding is located between the two turns of the primary winding, i.e. the coil layer of the secondary winding is located between the layers of the primary 1J.

The disadvantages of such a transformer are the complexity of the design and the impossibility of obtaining any transformation ratio other than one, which limits the use of such transformers only for

2

matching output amplifier stages with different types of loads.

High-frequency broadband transformers are also known, consisting of a toroidal core with primary and secondary windings wound on it, made of insulated wire. The secondary windings of such transformers, in order to reduce the leakage inductance, are located between the primary windings. The conversion efficiency of such transformers is determined by the ratio of the number of turns of a high voltage winding to the number of turns of a low voltage winding. Depending on how the windings are primary, the transformer will increase or decrease 2.

However, known transformers with a transformation ratio significantly different from the unit are inefficient at

Claims (2)

1. USSR author's certificate number 356704 ,, class. H 01 F 19/04, 1970. 2. Design of the radar-shifting devices. Ed. V.V. Shahgild on. M., Holy, 1976, p. 73.