CS260189B1 - Electromagnetic circuit, especially for impulse regulated power supply - Google Patents

Abstract

The solution concerns an electromagnetic circuit, especially for a pulse-regulated source, i.e. a choke or transformer, designed directly on a printed circuit board. The aim of pulse-regulated sources is to reduce production costs and improve some electrical and mechanical properties. The electromagnetic circuit consists of one or more printed circuit boards and a divided magnetic core. The printed circuit boards are formed by a ring arrangement of printed circuit boards of an even number of conductive layers, clad on both sides with conductive foils, of the pulse-regulated source, i.e. the main board, or the required number of secondary boards, which are arranged in parallel above or below the main board and electrically insulated from it and from each other by insulating foils. Within the same annular arrangement, the planar coils are magnetically connected to each other by a common divided magnetic core, shaped to be suitable for the planar installation of the pulse-controlled source, which is inserted perpendicularly into the holes in the main plate and the secondary plates. The basic prerequisites for the use of the electromagnetic circuit are a sufficiently high operating frequency and favorable voltage and current ratios.

Description

260189

The present invention relates to an electromagnetic circuit, in particular for a pulse regulated source. At present, the inductors and transformers of pulse-controlled sources are produced predominantly with coils wound by insulated conductors of different kinds of clutch bodies, or are produced with self-supporting girls. The main advantage is the versatility with respect to operating frequencies and usability without performance limitation. The biggest disadvantage is the high production demands, which are connected mainly with the amount of manufacturing operations needed and with considerable consumption of materials, energy and live work. The electromagnetic circuitry with the wound slipper generates a not insignificant part of the volume and weight of the pulse controlled source, and their use reduces the mechanical and climatic resistance of the power supply and the powered equipment.

The above drawbacks are substantially eliminated by the present invention of the electromagnetic circuit according to the invention, characterized in that the flat coils formed by the annular arrangement of the strand circuit boards of the even numbered conductive layers by the double-conducting film-clad plates of the pulse-controlled source, namely that is, the number of sub-plates required, which are parallel to each other above or under the head plate, and electrically insulated therefrom by insulating sheets therefrom.

The surface coils within the same ring arrangement are mutually magnetically connected by a common divided magnetic core to a shape-matched flush mounting of a pulse-controlled source which is perpendicularly inserted into the orifice in the mainboard and the secondary pulse-controlled source.

The two outer outlets of each flat coil are led out to the main end and form the beginning and the end, moreover the outer and inner outlets of the coil planes serve to interconnect the ears and ends of the coil flats between the conductive layers, e.g. meaning. At the same time, the ripple-like printed circuit boards, of which the coils are assembled, can be magnified and galvanized. The advantage of the solution of the electromagnetic circuits according to the invention is manifested mainly in the series production, where the increased cost of the printed circuit board with negligible printed circuit boards is negligible compared to the reduction of production costs. The surface coils clad on printed circuit boards have better reproducibility compared to the coil coils, higher mechanical resistance and better heat dissipation to the surroundings, whereby they can be designed with higher current density. By directly connecting the coil outlets to the coil without additional conductors, parasitic influences such as electromagnetic radiation are minimized.

Designs of electromagnetic circuits with flat coils are suitable for flush-mounted installations of pulse-controlled sources and especially for thatched designs. Basic prerequisites for the suitability of the use of electromagnetic circuits with surface-active circuits in pulse-controlled sources are: high working frequency, high core permeability, favorable voltage and current ratios, structural requirements and production conditions.

1 is an example of a simplified mechanical assembly of an electromagnetic circuit in an exploded form; and FIG. 2 shows a four-layer embodiment of a coil in a main plate and a side view illustrating the method of guiding the leads to the main. and that of the coil printed circuits of the individual conductive layers. The illustrated platelets are distinguished by solid, dashed, and dot-dashed lines.

The electromagnetic circuit (FIG. 1j consists of one or more planar surfaces 1 (FIG. 2) and a split magnetic core 2. The surface coils 1 are formed by a spiral arrangement of coil planar connections 3 of even conductive layers 4. two-sided conductive foil sheets S, 6 of an impulse-controlled source comprised of a main flange 5, or the necessary number of side plates 8, which are arranged parallel to or below the main plate 5 and therefrom electrically insulated by insulating foils 7. The coils 1 within the same arrangement are mutually magnetically connected by a common divided magnetic core 2 adapted to the surface installation of a pulse-controlled source, which is perpendicularly inserted into the openings 8 in the main plate 5 and the side plates 6 of the pulse-controlled source.

The two outer outlets 9 of each flat unit 1 are led out to the main end S, forming its beginning and end, in addition the outer and inner outlets 10 of the coil surface connections 3 serve to interconnect the ends and ends of the coil surface connections 3 between the conductive layers 4, e.g. In the same sense, the coils of the coil printed circuits 3, of which the surface coils 1 are composed, can also be galvanized.

Claims (3)

SUBJECT An electromagnetic circuit, in particular for a pulse-regulated power supply, comprising one or more coils and a magnetic core, characterized in that the coils (1) are formed by an annular array of coil printed circuits (3) of an even number of conductive layers (4). or a number of sub-plates (6) which are arranged parallel to or above the main plate (5) and electrically insulated therefrom by insulating foils (7), the flat coils (1) being magnetically interconnected by a common magnetic core ( 2) adapted to the surface area of the pulse-regulated power supply, which is perpendicular to the holes (8) in the main board OF THE INVENTION (5) and the secondary thatch (6) of the pulse-regulated power supply. | 2nd Electromagnetic circuit according to claim 1, characterized in that the two outer terminals (9j of each PCB (1) are led to the main thatch (5) and form its beginning and end, the outer and inner terminals (10) of the coil PCBs (3J). interconnecting the ends and ends of the coil printed circuits (3) between the conductive layers (4), for example in series in the same sense. 3. Electromagnetic circuit according to claim 1 and 2, characterized in that the depths of the coil printed circuits (3) of which the flat coils (1) are composed can also be increased by a galvanic method.