Greenhouse flower seedling humidity control with birdsong circuit

Published:2011/4/20 20:18:00 Author:Nicole | Keyword: greenhouse, flower seedling, birdsong | From:SeekIC

The circuit is as shown, it is composed of humidity semsor, detection circuit, temperature indicator, comparison circuit, SCR control heating circuit, birdsong phonation circuit and AC depressurization rectifier circuit. RH is humidity sensor, it adopts MS01-B, when the relative humidity changes in the range of 20%~90%, its resistance will change between few KΩ and several hundreds kΩ.



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