Soil Heater For Plants Circuit


Posted on Oct 24, 2012

A TDA1024 electronic thermostat senses soil temperature via thermistor R6. The circuit uses zero-crossing switching of the heater. The heater is made of elastic-coated steel wire. PI is used to set the temperature. The heater should have 2 or more resistance and operate from the 9-V transformer.


Soil Heater For Plants Circuit
Click here to download the full size of the above Circuit.

About 40 W of heat is available.




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