JET TRIGGER WITH COUNTER INPUT Russian patent published in 1994 - IPC

FIELD: pneumatic automation engineering; control systems of operating equipment, formation of digital automatic devices. SUBSTANCE: jet trigger with counter input has passive trigger 1, analogous amplifying element 2 and output active trigger 3. Passive trigger has two channels of control 4, 5, two outputs 6, 7, and feeding channel 8. Analogous amplifying element 2 has feeding channel 9, two outputs 10 and 11 and two pairs of control channels 12, 13 and 14, 15. Outlet active trigger 3 has feeding channel 16, two control channels 17, 18 and two output channels 19, 20. Each channel of feedback has two pairs of chokes 23, 24 and 25, 26, and inter-choke chambers 27, 28 are connected to atmosphere by channels 29, 30. Passive trigger has two channels 31, 32 to set it to its unitary and zero condition. EFFECT: considerable reduction of level of signals of excessive pressure at outputs of passive trigger, approximation of this level to atmospheric pressure without deterioration of trigger operation. 1 dwg