AUXILIARY RELAY Russian patent published in 2003 - IPC

FIELD: electrical engineering. SUBSTANCE: auxiliary relay has first transistor; relay coil with make contact; voltage regulator diode; first capacitor whose first terminal is connected to first input terminal of auxiliary relay and to input terminal of voltage regulator diode; second capacitor; first resistor whose first terminal is connected to second terminal of first capacitor, to second terminal of second capacitor, and to emitter of first transistor; additional resistor in the form of variable resistor whose first extreme terminal and adjusting terminal are connected to second terminal of first resistor and second extreme terminal, to output terminal of voltage regulator diode; second resistor in the form of variable resistor whose first extreme terminal is connected to first input terminal of auxiliary resistor, adjusting terminal, to second terminal of second capacitor and to base of first transistor and second extreme terminal, to third terminal of second resistor; second transistor whose collector is connected to base of first transistor; third resistor whose first terminal is connected to base of second transistor and to collector of first transistor; fourth resistor whose first terminal is connected to emitter of first transistor and to second terminal of third resistor; third transistor; fifth and sixth resistors; diode whose input terminal is connected to first terminal of sixth resistor, to emitter of third transistor, to first input terminal of auxiliary relay, and to first terminals of make contact and fifth resistor, second terminal of the latter being connected to second terminal of fourth resistor and to base of third transistor whose collector is connected to second terminal of sixth resistor, to output terminal of diode, to second terminal of make contact, and to first terminal of relay coil; and also seventh resistor whose first terminal is connected to second extreme terminal of additional resistor and second terminal, to second terminal of relay coil and to second terminal of auxiliary relay. Input terminals of diode and voltage regulator diode function as their anodes and output terminals, as cathodes; first input terminal of auxiliary relay functions as terminal for connecting minus of input signal and second input terminal, for connecting input signal plus. EFFECT: reduced off-time. 3 cl, 1 dwg