SU515171A1 - Printed inductance - Google Patents

Description

(54) PRINT INDUCTIVITY

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The invention relates to the electronic industry and can be used as a throttle or transformer in the design of integrated circuits.

The printed inductance is known, which is outlined in the form of printed windings with flat cores of magnet-like material located on a flat dielectric base on both sides.

However, such a device is characterized by temperature conditions under which the windings of an electric induction device operate, and a limited cooling surface, and therefore a limited allowable power per unit of device weight (boom.

Different temperature conditions about:; The coils are caused by the fact that some winding elements are closer to the surface, from which heat is transferred to the surrounding space, and others further. Placing the windings along the thickness of the electric induction device leads to the fact that each element of the winding does not have on its outer surface an individual cooling.

your surface, i.e. The electric induction device has a limited surface area (cooling capacity).

The purpose of the invention is to increase the permissible power per unit weight of the device.

For this, the printing coils are evenly distributed over the entire surface of the dielectric base. Each winding of one side of the dielectric base is located coaxially to a winding placed on the other side of the base, connected in series with it, and all pairs of coaxially arranged windings are interconnected.

FIG. 1 depicts an electric induction device used as drossel; in fig. 2 - throttle board without external magnetic core, bottom, side and top views.

The device contains a plate 1 of dielectric material, on each side of which n printed loop windings 2 are applied. Each winding of one side is coaxial with the winding of the other, connected to it in series and according to it and has a common flat core equal to board and recessed into it. On each side of the board with windings, covering the entire surface of the board, plates 4 and 5 of magnetically soft material, which are a common magnetic core for all windings, are strengthened. These plates are isolated from the windings and installed at a minimum distance from them. The supply of power to the windings is carried out through contacts 6. In the case of using an induction device as throttle, all pairs of coaxially arranged windings are interconnected in series and form one electrical circuit. Moreover, each pair of coaxially arranged windings must have at least one pair of coaxially arranged windings connected with it in accordance with. For adjusting the inductance I of the plate 4 of the external magnetic core can be made to be cut. In the case of using an inductive device in the combing of a transformer, all pairs of coaxially arranged windings are connected so that they form two separate electrical circuits, inductively interconnected. The device works as follows. In the case of using an electric induction device as a drossel, it should have a maximum inductance and a minimum resistance, which during operation of the throttle should remain constant. When the Bseh loop windings are connected in series, the inductance electric circuit of the throttle adds up from the inductances of the loop windings and the mutual inductances of the loop windings located in close proximity to each other and are connected according to their own inductances. The intrinsic inductance and mutual inductance of the loop windings depends on the magnetic permeability of the magnetometer: gadfly, consisting of cores 3 and plates 4 and 5 of the external magnetic conductor. The greater the magnetic permeability of the magnetic circuit, the higher the inductance and mutual inductance of the pearl windings. Drossel resistance is equal to the sum of active resistances of loop windings. With the flow of current fi, the electric circuit of the throttles in the windings leads to heat. Due to the fact that all the elements of the windings are evenly distributed over the entire surface of the board, they are located at the same distance and Hz-pshma. surrounding area ; performed efficiently and evenly. This leads to a decrease in the temperature of the windings, and, consequently, to a smaller distortion of the parameters of the throttles. Drossel. To regulate the inductance of the throttle, the external magnetic core can be made in the form of discharge plates 4. In this way, the magnetic conductivity of the external magnetic core can change the inductance of the throttle. In the case of using an electric induction device as a transformer, it should have two electrical circuits having the maximum possible mutual inductance. This is achieved by locating the loop windings of one electrical circuit at a minimum distance from the loop windings of the other electrical circuit. The coaxially arranged windings of one electric circuit are interconnected in series and in agreement, and each pair of coaxially arranged windings is connected to other coaxially arranged windings in series and counter. This ensures maximum mutual inductance of the two electrical circuits and reduces the inductance of each electrical circuit. From the point of view of increasing the permissible power to the transformer windings, its work is equivalent to the operation of the choke. Formula Printed inductance is made in the form of printed windings with flat cores and a magnet of a soft material arranged on a flat dielectric insulator on both sides, in order to increase the power per unit weight of the device, the printed windings are evenly distributed over the entire surface a dielectric base, where each winding on one side of the dielectric is located coaxially to the winding that is stirring on the other side of the base, a follower is connected to it but, and all pairs of coaxially arranged windings are interconnected.

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