DE9417499U1 - Transformer for generating two high voltages with a high potential difference between them - Google Patents

Description

Haar, 7.11.1994

VOGT electronic AG 94130 Obernzell

Description

Transformer for generating two high voltages with a high potential difference between them

The innovation relates to a transformer according to the introductory part of claim 1.

If you want to generate two high voltages with a high mutual potential difference from a voltage source using a single transformer, the problem arises with the commonly used ε-core and U-core structures, in which the primary coil is arranged on a single coil body and usually only one coil body is used for all coils, of maintaining sufficient distances for the winding insulation with a reasonable component size.

With the innovation, the above-mentioned problem is solved by the features mentioned in the characterising part of claim 1.

The innovation allows a space-saving, compact transformer design with sufficiently large distances between the high-voltage windings to achieve reliable mutual insulation.

The subclaims relate to preferred embodiments of the transformer according to claim 1.

The innovation is explained in more detail below using the drawing of an example. The drawing shows:

Fig.l the transformer in front view,

Fig.2 the transformer in side view and

Fig.3a-

3d shows a coil former that can be used in the transformer according to Fig. 1 and 2, namely in Fig. 3a in a view from above looking in the direction of the coil former's longitudinal axis, in Fig. 3b in a side view in section along the section line 3b,3b in Fig. 3a, in Fig. 3c in a side view for the viewer of Fig. 3a seen from the left and in Fig. 3d in a side view for the viewer of Fig. 3a seen from below.

The transformer according to Fig. 1 and 2 has a two-part ferrite or iron powder core 1, designed either as a U-U core or as a U-I core, on whose two legs 2 a chamber coil body 3 or 3', which is one-part in the embodiment, is arranged.

The two chamber coil bodies 3, 3', the structure of which is shown in detail in Fig. 3a-3d, are identical to one another and are arranged on the core 1 in such a way that they are arranged symmetrically to the center plane M of the core 1, which is parallel to the plane of the drawing in Fig. 2 and perpendicular to the plane of the drawing in Fig. 1. The primary winding of the transformer is divided in half between the two coil bodies 3, 3', with the winding halves P/2 each being located in the chamber a of the respective chamber coil body 3 or 3', which is the lowest chamber for the viewer of Fig. 1 and 2.

The two high-voltage windings not shown in the drawing are divided into the chambers h _x ~b ₅ of each chamber coil body 3 or 3', whereby the thickness d of the chamber base b' enclosing the respective core leg 2 in the chambers b _x -b ₅ increases gradually from chamber to chamber away from the chambers a provided for the primary coil halves P/2.

Three connecting pins 4a-4c extend outwards from each coil body 3 or 3', two of which are connected to the ends of the

respective primary coil half P/2 and the third serves to connect one end of the high-voltage winding leading out of the chamber b _x , the other end of which is mechanically fixed to a pin 5 located above the chamber b _s and is connected to a high-voltage line (not shown).

The coil bodies 3, 3' are wound in the chambers b only to such an extent that there is a sufficiently large insulation distance everywhere between the high-voltage winding carried by the coil body 3 on the one hand and the high-voltage winding carried by the coil body 3' of opposite polarity to the first-mentioned on the other hand.

Preferably, the wound coil bodies 3.3' are cast.

The core 1 has a rectangular, in the embodiment square, cross-section, and the coil bodies 3, 3' are adapted to this cross-section, as can be seen in particular in Fig. 3a.

In the embodiment shown, the coil bodies 3,3' are one-piece, but this is not a mandatory requirement.

Claims (3)

Haar, 7.11.1994 VOGT electronic AG 94130 Obernzeil My reference: V215/GM *. Protection claims 1. Transformer with a metal powder or ferrite core (1) and arrangement of the coils on at least one coil former (3,3'), characterized in that in order to generate two secondary high voltages with a large potential difference between them from the primary voltage, the core (1) is designed as a UU or UI core and on each of the two core legs (2) there is arranged a chamber coil former (3,3') carrying one of the two high-voltage windings, the two chamber coil formers (3,3') being identical to one another and arranged symmetrically to one another and the primary winding being divided in half (P/2) between them and arranged in chambers (a) which are symmetrical to one another and located towards one end of them. 2. Transformer according to claim 1, characterized in that for each coil body (3, 3') in the chambers [1O ₁ -Io ₅ ] provided for receiving the high-voltage windings, the thickness (d) of the chamber base (b') adjacent to the relevant core leg (2) and enclosing it increases stepwise from chamber to chamber in the direction away from the primary winding chamber(s) (a). 3. Transformer according to claim 1 or 2, characterized in that the core legs (2) surrounded by the coil bodies {3,3') have a rectangular cross-section.