greenhouse ground hotline controller(2)

Published:2011/7/19 23:38:00 Author:chopper | Keyword: greenhouse, ground hotline, controller | From:SeekIC

This example describes the greenhouse ground hotline controller, which uses the cycle rate control,and it is of advantages like energy saving, small harmonic interference and so on. 　The principle of circuitThe greenhouse ground hotline controller circuit is formed by power supply circuit and heating control circuit, which is shown in figure 4-199. Power supply circuit is formed by the fuse FU,power transformer T,rectifier diodes VD1-VD3, resistor R1,three-terminal voltage regulator integrated circuit IC1 and filter capacitor C1. Heating control circuit consists of resistors R2-R5,capacitor C2,voltage regulator diode VS,non-gate Schmitt trigger integrated circuit IC2 (D1-D3), trigger JK integrated circuit IC3 (A1,A2,counting/pulse distribution integrated circuit IC4, selective switch S,the transistor V,thyristor VT and ground hotline EH.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/Protection_Circuit/greenhouse_ground_hotline_controller2.html

Print this Page | Comments | Reading(3)