the alarm circuit of water break in the spray pipe for seeding-machine(1)

Published:2011/7/15 21:50:00 Author:Ariel Wang | Keyword: alarm , water break , spray pipe , seeding-machine | From:SeekIC

When the mains switch S gets through,the water break detected cicWhen the mains switch S gets through,the water break detected circuit and the sound and light alarm are conducted to work.When the spray pipe of any circuit is not blocked,the base electrode of V1 and V3 are low level.V2,V4~V6 are not conducted.VL1 and VL3\2 are not lighted.BL doesn't give a sound. When the spray pipe of any circuit is blocked.The SenseFET of the circuit is conducted as the base electrode becomes high level.The LED of the circuit is lighted.It indicates how many the blocked spray pipes are.At the same time,the audio oscillatory circuit works.B1 gives out the alarm sound.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Automotive_Circuit/the_alarm_circuit_of_water_break_in_the_spray_pipe_for_seeding_machine1.html

Print this Page | Comments | Reading(3)