Rock Illuminations Controller Composed of NE555

Published:2011/8/18 6:18:00 Author: | Keyword: Rock Illuminations, Controller | From:SeekIC

The picture shows the rock illuminations control circuit. The controller consists of voltage reduction and rectification circuit, 555 multivibrator, illuminations control circuit. For the multivibrator which is composed of 555 and D4,D3,W1,C2, by adjusting W1, the circuit's charging and discharging time constant can be changed which will make the alternating square wave's duty ratio 2:1. When IC(555)'s pin 3 output low level, the inside corresponding discharging tube's discharging function will make pin 7 have low level which will illuminated LED1 and relay J2 will be connected. Then the first group of illuminations will be turned on by the control.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Rock_Illuminations_Controller_Composed_of_NE555.html

Print this Page | Comments | Reading(3)