Abstract: The present invention relates to a transformer with a coil body accommodating at least one primary coil and one secondary coil. It is the object of the present invention to provide a transformer which, using the smallest possible amount of high-grade insulation material, ensures good insulation while remaining compact and easily assembled. The object is achieved by a transformer of the above type which is characterized in that the coil body comprises at least one primary part, accommodating the primary coil, and one secondary part, accommodating the secondary coil, and wherein at least one section of the primary part can be covered by at least one section of the secondary part. This section of the secondary part performs the function of the fire-protection housing for the primary part of the transformer.

Abstract: The present invention relates to a power supply circuit comprising at least one transformer which is connected to a primary side circuit and to a secondary side circuit. The present invention further relates to a method for producing such a power supply circuit. To provide an improved power supply circuit which has a reduced size and increased power density and offers more flexibility in the formation of the safety distances between primary side and secondary side, the primary side circuit and the secondary side circuit are each mounted on at least one separate circuit carrier, said circuit carriers being mechanically and electrically coupled to one another and arranged in at least two different planes. According to advantageous embodiments, said circuit carriers may be arranged in planes that are either parallel with or transverse to one another.

Abstract: The present invention relates to a transformer with a coil body accommodating at least one primary coil and one secondary coil. It is the object of the present invention to provide a transformer which, using the smallest possible amount of high-grade insulation material, ensures good insulation while remaining compact and easily assembled. The object is achieved by a transformer of the above type which is characterized in that the coil body comprises at least one primary part, accommodating the primary coil, and one secondary part, accommodating the secondary coil, and wherein at least one section of the primary part can be covered by at least one section of the secondary part. This section of the secondary part performs the function of the fire-protection housing for the primary part of the transformer.

Abstract: The present invention relates to a power supply circuit comprising at least one transformer which is connected to a primary side circuit and to a secondary side circuit. The present invention further relates to a method for producing such a power supply circuit. To provide an improved power supply circuit which has a reduced size and increased power density and offers more flexibility in the formation of the safety distances between primary side and secondary side, the primary side circuit and the secondary side circuit are each mounted on at least one separate circuit carrier, said circuit carriers being mechanically and electrically coupled to one another and arranged in at least two different planes. According to advantageous embodiments, said circuit carriers may be arranged in planes that are either parallel with or transverse to one another.

Abstract: A device is described for supplying electrical current to electric appliances, especially mobile appliances. The device has a plug housing (1) equipped with an electric plug which houses the electrical and electronic components supplying the current. To simplify the use of the device with various electric socket configurations, several interchangeable adapter plugs (17) are provided which can be releasably attached to the plug housing (1). Each adapter plug has contact pins which are shaped and arranged according to electric socket configurations used in various countries. The adapter housing has contact springs (20) which are electrically coupled to the contact pins (19) and which contact corresponding current supply contact surfaces (8) carried by the plug housing (1). The plug housing (1) has a recess (2) into which a tongue (8) of an electronic circuit board (6) protrudes and on which the contact surfaces are formed.