moisture elimination in inverter

[asimraufawan]

Hi everyone,

I need a heater circuit for inverter so that when the inverter is turn off
heater starts and maintain the temperature of air above 20 deg celcius.

Kindly help me out thanks

 

[pranam77]

Instead always swicthing on the heater when the inveter is off, you may consider to design it in a precise way, so that you switch a heater coil, through a relay, when the temperature in the Inverter cabinet decreases below a certain point. This can be easily done with a comparator IC like LM324 or LM358 or so.
Cheers

 

[dick_freebird]

Seems like a simple relay (SPDT, coil off inverter main
switched power) and resistor (via NC contacts to inverter
unswitched power feed).