thermoelectric cooler + db105g?
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Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122204
Printed Date: May 21, 2024 at 11:18 AM
Topic: thermoelectric cooler + db105g?
Posted By: ocman
Subject: thermoelectric cooler + db105g?
Date Posted: June 07, 2010 at 11:42 PM
I noticed that one of these (Bridge Rectifier?) chips is being used inline for the power to my cooler's fans. The reason I noticed is because I broke the leads off it while separating the wire bundle when replacing the fan. By the time I saw the chip was embedded in the shrink tube, it was too late.
This chip is supposed to do AC/DC conversion, but I'm wondering if I even really need it? I'm pretty sure the cooler is getting 12v DC while plugged into the vehicle power and also when it's plugged into a 120v outlet using the supplied Coleman "Switching AC/DC Power Adapter".
Do I need to replace this chip, or can I just run the power leads directly to the 12v DC fans?
Thanks
This chip is supposed to do AC/DC conversion, but I'm wondering if I even really need it? I'm pretty sure the cooler is getting 12v DC while plugged into the vehicle power and also when it's plugged into a 120v outlet using the supplied Coleman "Switching AC/DC Power Adapter".
Do I need to replace this chip, or can I just run the power leads directly to the 12v DC fans?
Thanks
Replies:
Posted By: ocman
Date Posted: June 08, 2010 at 12:01 AM
Ahhhhh, after some more searching and reading, I stumbled upon this diagram, which cleared things up...
Since the cooler has a coupler/plug on the cord, which can be reversed to put the unit in either HOT/COLD mode, this rectifier is used to power the fans in both configurations. Definitely not useless!
Since the cooler has a coupler/plug on the cord, which can be reversed to put the unit in either HOT/COLD mode, this rectifier is used to power the fans in both configurations. Definitely not useless!