Multistage electric programme switch - has insulating drum between two rows of contact springs which can be connected by conducting traces on drum

摘要

The multi-position electrical programme switch has contact springs arranged in two parallel rows. Conducting traces are produced on the surface of a cylindrical insulating switching drum (12), whose axis is parallel to the above rows of contact springs, so that when the drum (12) is rotated, connections between contact springs can be made and broken. The contact springs press by their own elasticity to the diametrically opposite points on the drum (12) surface (13).