SU1697061A1 - Control ac to ac voltage converter - Google Patents

Abstract

The invention relate to electrical engineering. The purpose of the invention is to increase reliability. When the voltage changes upwards, at the beginning of each half cycle one of the keys 8, 10, 12, 14 is connected to the primary winding 6 of the booster transformer 4. In the head of each negative half period one of the keys 9, 11,13, 15 connected to the primary winding 5 of a voltaic additional transformer 4. One of the primary windings of a stand-up transformer 4 is powered only during the half period of one polarity. When the network voltage is changed, the keys connected to the corresponding terminals of the secondary winding of the matching transformer 1 are included. By switching on the primary windings of the volt-auxiliary transformer 4, the possibility of short circuits arising is avoided, thereby achieving the goal. 1 lg (Ls

Description

The invention relates to electrical engineering and can be used in power circuits of various radio electronic circuits.

instrumentation.

The purpose of the invention is to increase reliability.

The drawing shows a diagram of the proposed device, which contains a matching transformer 1, the primary winding 2 of which is connected to the input terminals, the secondary winding 3, booster transformer 4 with two primary windings 5, 6 and the secondary winding 7. Primary windings 5 and 6 booster transformer 4 are made with equal number of turns and included counter. Their

the outermost leads, through corresponding switches 8-15, made unidirectional, are connected to the corresponding sections of the primary winding 2 of the matching transformer 1. The common point of the primary windings 5, 6 and the winding 2 are connected directly.

Of the three transducers, similar to those shown in the drawing, one single-phase transducer can be composed.

The device works as follows

When the voltage changes upwards, at the beginning of each positive half period, one of the keys

About VJ

oh oh

whose 8, 10, 12, 14 connected to the primary winding 6 of booster transformer 4. At the beginning of each negative half-period, one of the keys 9, 11.13, 15 is connected to the primary winding 5 of booster transformer 4.

The power supply to one of the primary windings of the booster transformer is carried out only during a half-period of one polarity.

When the mains voltage changes, the keys connected to the corresponding terminals of the secondary winding of the matching transformer 1 are turned on.

Due to the inclusion of the primary windings of the booster transformer, made with an equal number of turns, the number of sectioned windings of the matching transformer 1 is reduced to one and the possibility of short-circuited circuits is ruled out in principle, therefore, the reliability is increased, the possibility of

0

five

0

five

unilateral magnetization, which took place in the prototype.

Claims (1)

Claims An adjustable AC-to-AC converter contains a matching transformer, one of which windings is made sectioned, and a booster transformer, the secondary winding of which is connected between the input and output pins, and the primary winding is connected to one section of sections through a section of keys winding, and another conclusion - with one of the extreme conclusions of the partitioned winding, characterized in that, in order to increase reliability, the primary winding oltodo- baeochnogo transformer is formed in two sections with equal numbers of coils connected in series-opposite, extreme conclusions which are associated with the keys, and the total output from one of the terminals of a partitioned winding. four