ELECTROPNEUMATIC BRAKE DRIVE Russian patent published in 1997 - IPC

FIELD: transport engineering; brake systems. SUBSTANCE: multiple circuit brake drive has pressure setters, pressure pickups connected in tandem to direct input of operative amplifier and input of logic control device through one of analog signal switches in parallel to one of fixed resistors. Variable resistors are connected to supply source and to other switch to which other fixed resistor is parallel connected. Amplifier is connected by its inverting input to switch and through feedback resistor, to its output and to input of device whose output is connected by bus to switches. Outputs are connected with each corresponding circuit. EFFECT: enlarged operating capabilities. 1 dwg