DE7112112U - Choke coil for interference suppression purposes with a soft magnetic core - Google Patents

Description

VOGT * CO KG, Erlau over Passat, /

Choke coil for interference suppression purposes with a flexible core.

Legislation requires extensive interference suppression from electrical appliances. For this purpose, interference suppression elements are required, which mostly consist of capacitors and choke coils, through which the entire useful current flows, which has a size that partially saturates the soft magnetic core, so that the interference suppression effect decreases depending on the degree of saturation »best proven to toroids have ^ mixture of a compressed iron powder, which is held together by a binder ·

However, as we all know is very inefficient, to wind toroids, especially with small diameters and thick wire · These difficulties avoids the br ~ ispruchte innovation in its various embodiments ndem the core is divisible and the winding is reconnected after pushing, or by an Dovetail toothing or by gluing with an adhesive that can penetrate into the pores of the magnet core that are still present.

The choke coil can advantageously be designed in such a way that it ensures optimum space utilization with the greatest possible degree of interference suppression in predetermined recesses, such as, for example, with thyristor-controlled regulators (dimmers). The forms of execution of the throttle or the required iron core are described in detail.

Figure 1 shows a core in double L-shape with the two tric parts U) and (2). The connecting yoke (3) is held stronger than the legs in order to achieve optimal magnetic properties and to reduce the stray magnetic field. The coils (not shown here, but can be taken from FIG. 3 (8)) are simply pushed onto one or both legs as prefabricated coils and the core is then glued to the contact points (4).

VQGT & CO KG,

Ee tr; Choke coil for interference suppression purposes with, ..

Figure 2 shows a core in U-I shape (U-part is (5), I-part is (8). Here the coils are pushed onto the Si © U-arm (7) and then the I-part (6) with it like a dovetail connected to the U-part of the magnetic core by a pressing or gluing process.

FIG. 3 shows a finished choke, the coils (8) being drawn in section * The U-shaped core (9) is attached after it has been attached of the coils glued to the yoke piece (IC).

Figure 4 shows the side view of this arrangement. Here you can see that the two iron core parts not enclosed by the coil are held as high as the coil for better magnetic properties and a smaller stray field.

Claims (8)

VOQT & CO KG, Er lau over Passau '' "; Betr.; Utility model registration: choke coil for interference suppression purposes, protection claims 1.) Throttle for interference suppression purposes in electrical devices, e.g. for thyristor-controlled dimming regulators, characterized in that that the magnetic core is divided and the winding consists of one or two prefabricated coils, which on the Legs of the core are pushed on and the connection of the two core halves is effected by an adhesive or pressing process became. 2.) throttle according to claim 1, characterized in that the core consists of two geometrically identical L-shaped halves * 3.) throttle according to claim 2, characterized in that the shorter Legs of the L-shaped cores are thicker than the longer legs that carry the coil Cn). 4.) throttle according to claim 1, characterized in that the core consists of a U- and an I-shaped part, 5.) throttle according to claim 4, characterized in that the I-shaped part and / or the part connecting the two legs is thicker than the legs that carry the coil Cn) C Figure 4), 6.) throttle according to one of the preceding claims, characterized in that that the coils are wound on bobbins, 7.) throttle, characterized in that the coils are wound in a self-supporting manner (CVback coils), 8.) throttle according to claim 1, characterized in that the core Finished in its closed dimensions and broken in a defined manner to accommodate the bobbins and then put back together again * - is joined.