Infrared heating device temperature control circuit

Published:2011/5/18 10:31:00 Author:TaoXi | Keyword: Infrared, heating device, temperature control | From:SeekIC

Working principle: the circuit is as shown, IC (555) connects to the low frequency oscillator, by adjusting RP, you can change C3's recharging time constant, and the pin-3's output pulse duty ratio also changes too, that changes the ratio of the SCR conduction and closing time, and also control the average power of the heating pipe RL to achieve the temperature control purpose. When RP is adjusted to the top value, the IC output pulse duty ratio is about 0 , RL gets the minimum power; When RP is adjusted to the lowest value, the IC output pulse duty ratio is about 1 , RL gets the maximum power. So you can make the IC output pulse duty ratio continuous changes between 0 and 1 .



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Remote_Control_Circuit/Infrared_heating_device_temperature_control_circuit.html

Print this Page | Comments | Reading(3)