Electric controller with heat sink forming cooling air channel inside housing

An electrical controller, comprising:

• a housing, wherein the housing has cooling air openings on two different housing sides;
• a heat sink that is arranged inside the housing, so as to be protected against contact, and that forms a cooling air channel, wherein the cooling air channel runs between the cooling air openings of the different housing sides;
• an electrically insulating holding element that mechanically fixes the heat sink inside the housing in a manner electrically insulated from the housing;
• and
• a number of components to be cooled, wherein the components to be cooled are thermally conductively coupled to the heat sink and are held by the heat sink,
• wherein
• the number of components to be cooled comprises power semiconductors, coils and/or capacitors,
• a first number of coils are thermally conductively coupled to the heat sink on a first side of the heat sink,
• a second number of coils are thermally conductively coupled to the heat sink on a second side of the heat sink,
• the first side of the heat sink lies opposite the second side of the heat sink,
• a number of power semiconductors are thermally conductively coupled to the heat sink on a third side of the heat sink, and
• the third side of the heat sink is perpendicular to the first side and the second side of the heat sink.