greenhouse flower nursery humidity control with bird voice alarming circuit MS01-B

Published:2011/7/6 9:12:00 Author:John | Keyword: bird voice, greenhouse flower | From:SeekIC

The circuit is shown, which consists of humidity sensor, detection circuit, temperature indicator, comparator circuit, SCR control heating circuit, bird voice circuit and exchanging buck rectifier circuit. RH is the humidity sensor, which uses the MS01-B type. When the relative humidity inside the greenhouse changes from 20% to 90%, its resistance can range with a few kΩ to hundreds of kΩ.



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