The invention relates to a support for metal coils, wherein a metal coil substantially has a circular circumference as viewed in cross section and the support comprises at least three support points, which are arranged in such a manner as to make contact with the metal coil in the circumferential direction of the metal coil when the metal coil is laid on the support. The power supply rejection circuit generally comprises a comparison circuit for comparing a signal associated with a power supply such as, for example, a Wheatstone bridge configuration, to a stored reference voltage, such that the comparison circuit includes at least one existing capacitor therein. A list of allocatable resources having corresponding evaluation data is then accessed. Furthermore, each elastic member may vary in degrees of tension from the other elastic members. Each chamber is fed by passages and the main chamber is fed by a passage which passes through the cap, the cap including at least a spraying device in the form of a mini snow gun operating as nucleator.