DEVICE FOR CONTROLLING PARAMETERS OF ELECTRIC CIRCUITS SET UP OF ELECTRICAL AND RADIO COMPONENTS Russian patent published in 2002 - IPC

FIELD: switching devices; electric and electronic circuits for all industries. SUBSTANCE: device that may be used in particular for air temperature control in automatic climate control systems of automobiles has case suited to accommodate electrical and radio components together with mechanical system, shaft, and base in the form of ceramic board carrying evaporated resistors, contact and current-collecting members with leads. Leads are soldered on board. Case has ring with spring and locking member that functions to restrict shaft turn. Shaft is provided with guide slot for locking member travel. Shaft and ring are also provided with radial ribs which come in contact upon turning of shaft-mounted current collector. Proposed design provides for stepped control of circuit parameters according to desired cycle. EFFECT: enhanced reliability of control, simplified design. 4 dwg