DEVICE FOR REPEATED STARTING TO TEST OPERATIONS OF OUTPUT GATES Russian patent published in 2000 - IPC

FIELD: fire protection equipment, in particular, for automatic control systems for fire-fighting at traction rolling stock for railroads and other equipment. SUBSTANCE: device has sequence of switching circuits, which number corresponds to number of filaments in fire-fighting equipment, power supply, which outputs are connected to first and second lines. The following units are connected to both lines: fire-fighting equipment actuation unit, unit which checks working order of output gates and unit for checking integrity of filaments. Output of latter unit is connected to alarm unit. In addition triggering input of unit for fire-fighting equipment actuation is connected to triggering unit. Goal of invention is achieved by specific design of unit which checks working order of output gates and unit for checking integrity of filaments. Said unit which checks working order of output gates is designed as serial circuit of light-emitting diode and current-clipping resistor. EFFECT: decreased weight and size, possibility to check operations of all its circuits in required intervals. 5 cl, 1 dwg