FIELD: electricity.
SUBSTANCE: one main unit housing is offered which has in essence the shape of squared parallelepiped which is inserted by the battery element, and the section of contacts offered on the front surface of the main unit housing. The main unit housing comprises the conic sections on the angular sections formed by the upper surface and the lower surface and surfaces of opposite sides. The section of contacts is designed protruding on the front surface at the position shifted with reference to centre lines by width and by height. Angular sections on one side have slanted shape, and angular sections on another side have the rounded-off shape.
EFFECT: avoidance of damage of the power supply at incorrect insertion into compartment.
20 cl, 15 dwg
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