Mine-used electric coal drill safely using electricity controller

Published:2011/5/11 3:59:00 Author:Nicole | Keyword: electric coal drill, safely using electricity, controller | From:SeekIC

This mine-used electric coal drill safely using electricity controller can use electric drill handle switch to conveniently achieve long distance automatic power failure and power transmission, it greatly reduces the cable charging time and increases the security of using electricity. The working principle of this circuit This mine-used electric coal drill safely using electricity controller circuit is composed of trigger control circuit, hold circuit and control implement circuit, it is shown in the figure 8-33. The trigger control circuit is made of electric drill handle switch S, resistors R1-R5, diodes VD1, VD2, capacitors C1, C2 and transistor V1. The hold circuit is composed of current transformer TA, capacitors C3-C5, diodes VD3, VD4, resistors R6, R7 and transistor V2. The control implement circuit consists of resistors R8, R9, capacitor C6, transistor V3, diode VD5, relay K and AC contactor KM. When S is turned off, the current of L3 phase line disappears, then V2 cuts off, V3 cuts off too, K and KM gives off, M stops turning due to power failure.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Mine_used_electric_coal_drill_safely_using_electricity_controller.html

Print this Page | Comments | Reading(3)