Protective circuit for e.g. DC motor, has two electric circuit branches connected in series by thermo switch, and third electric circuit branch connected in parallel to one branch, where multiplier is arranged in one branch

摘要

The circuit has electric circuit branches (12, 14) connected in series by a thermo switch (18). The switch is attached to a heating unit (26) that is arranged in the branch (12). A third branch (16) is connected in parallel to the branch (12), and a multiplier (24) is arranged in the branch (12). The branch (12) is connected with the branch (14) or the branch (16) is connected with the branch (14) in series by the switch.