AUTOMATIC CONTROL UNIT Russian patent published in 1997 - IPC

FIELD: electrical engineering. SUBSTANCE: the unit uses elements that perceive signals, actuator and an intermediate element installed for engagement both with the perceiving element and actuator; heaters are used as signal perceiving elements, and electrical contacts are used as an actuator; the intermediate element is made in the form of a bimetallic plate; the heaters are installed on both sides of the bimetallic plate to provide action of the latter on the electrical contacts in opposite direction; the bimetallic plate is bent so that its ends form bends, one with heaters installed in each of them; one end of the bimetallic plate is rigidly fastened, and the other is intended for engagement with the electrical contacts; a charge-over contact set is used as electrical contacts; the heaters and electrical contacts are connected in such a way that at operation one of the contacts serves as a shunt for one of the heaters. EFFECT: enhanced reliability. 2 dwg