Compact and voltage stable automatic change over switch
A voltage-stabilizing automatic change-over switch (200) includes a capacitive circuit (202) that receives an input voltage from supply mains, a rectifier with a filter unit (204) that receives an input voltage from the capacitive circuit and converts it to a DC voltage. The voltage drop across the capacitive circuit is directly proportional to the input voltage. Two single-pole relay switches (208) are directly connected to the rectifier with the filter unit (204). A voltage controller (206) maintains a voltage across the single-pole relay switches such that the voltage does not exceed a threshold voltage. The single-pole relay switches select either the supply mains or an input supply from a generator and connect to a load (210). The single-pole relay switches select the supply mains when coils of the single-pole relay switches are energized by the supply mains.