Bottletopburly Posted December 17, 2019 Share Posted December 17, 2019 I have purchased a silicon heat pad only small with the intention of putting it on my mount when it under cover outside now I tried the dew bands running so it does the job doesn’t require much heat as the covers insulated just keeping dew at bay , now the pad is 12v 240w my supply is 12v 200w 15amp could I power the heat pad with this using a dimmer switch to control temperature?. +RonC 1 Link to comment Share on other sites More sharing options...
+Graham Posted December 17, 2019 Share Posted December 17, 2019 I cannot see a problem with that. As it is only 240 w I would try it direct first to see how warm it gets. Bottletopburly and +RonC 1 1 Link to comment Share on other sites More sharing options...
Bottletopburly Posted December 17, 2019 Author Share Posted December 17, 2019 2 hours ago, Graham said: I cannot see a problem with that. As it is only 240 w I would try it direct first to see how warm it gets. Thanks graham 👍 Link to comment Share on other sites More sharing options...
Clive Posted December 17, 2019 Share Posted December 17, 2019 It depends on your power supply. The heater will want to draw 20 amps. If your power supply has fold-back current limiting at 15 amps it could shut down even if you use a PWM controller so you would get no output. Rather than check how hot the heater gets, I would first check how hot the power supply gets! Bottletopburly 1 Link to comment Share on other sites More sharing options...
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