SU20226A1 - Electromagnetic Current Interrupter for AC Conversion in Electrotherapeutic Instruments - Google Patents

Description

The use of various types of rectifiers of deformable currents, for) 3A personal purposes is already known. It is also known to regulate the phase shift of the excitation current of an MI rectifier relative to the rectified or deformed current by means of reactive |: resistances in the excitation circuit. The present invention relates to a device of such an electromagnetic current-switching device for transforming alternating current in electrotherapeutic devices, in which the vibrating measles magnetized by alternating current are electrically connected to one primary terminal of an induction coil and provided with contacts. The latter, when vibrated, alternately come into contact with fixed contacts located on either side

core and connected clips of the secondary, winding winding of the supplying tokoprery. transformer center, midpoint

X, which is connected to the other terminal of the primary winding of the induction coil. Idio6peTeHHe is counterconstructed.

performance of the contact device and is intended to carry out a sharp

current interruption during the moments of reaching the maximum current strength and magnetic energy in the induction layer,. coil four times for each period

should allow to get from the induction coil goKg forms & curve: the first is needed for therapeutic purposes.

The drawing shows the scheme of the proposed Tox Contactor.

The vibrating meas- ure of the chopper f has an excitation winding, powered by alternating current From the transformer TI y, therefore, alternately spreading measles, alternately attracted by the poles L and 5 of the permanent magnet M. The armature is equipped with two groups of contacts and two contacts located on both sides cor, in each, with what koakt q shunted capacitors C and Cj. At the beginning of the current half-period, the contacts g are closed, and one of the contacts Jn is closed, the other is open. At the maximum current momentum, the corresponding current is interrupted, resulting in the current breaking. In the next half period, the same is repeated with the contacts located on the other side of the core p. Since the force of the current at that time changed its direction, the current in the primary induction coil Gz does not change in direction and must induce in the secondary winding an intermittent current of the appropriate form, used in medicine. Setting the moments of the conversation.

and closures are carried out in the usual way with the help of a self-induction coil L and a rheostat R, i.e. a change in aKTjiBHoro and the reactance of the field of the pendial rectifier excitation;

PREFACE

An electrical current interrupter for converting alternating current in electrotherapeutic devices, consisting of a vibrating core magnetized by an alternating current, which is electrically connected to one terminal of the primary induction coil and is provided with contacts that are in alternate contact with fixed contacts, each with both sides, each with both sides, both sides of the hinge contacts, which are in contact with alternating fixed contacts, each with both sides of the hinge contacts, each with both sides of the hinge contacts, which are in contact with each other, are fixed contacts, each with both sides of the hinges, each with both sides of the hinge contacts, which are in contact with each other and fixed contacts. connected to the terminals of the secondary winding of the current transformer supplying the transformer, the middle point of which is connected to another

clamping the primary winding of the inductor of the ion coil; characterized by the fact that in order to abruptly cover the current at the moments of its maximum value, as well as to store magnetic energy in the induction four times during each current period, the fixed contacts are divided into two groups, of which one group is mounted against spring contacts in the places of its swing with a small amplitude, it is intended for contact with springing contacts to the core during the initial moments of the current half-periods and is connected to the terminals of the secondary winding of the supply transformer through normal The opened contacts of the second group, which are mounted against the core in places of its swing with a large amplitude, are assigned to open under the action of the corr of the moments of the highest current value and are bridged by capacitors C and Cj.