Author Topic: Need help to choose hard-wired 12v transformer  (Read 3294 times)

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peteski

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Re: Need help to choose hard-wired 12v transformer
« Reply #30 on: October 27, 2016, 11:37:56 PM »
+1
You're welcome John  - looking good and bright!

But since this design was done on-the-fly (I wasn't 100% sure about the transformer wiring), I would test on your bench (with a full load) before a permanent install. I would leave it running for a day or so and see if or how hot the transformer and rectifier get. Neither should get hotter than what you can comfortably stand leaving your hand on it for extended period of time.  We don't want a fire hazard.  If the rectifier gets too hot to touch then bolt it to a heat sink. You can get heat sinks at the same place you got the rectifier, or bolt it to a piece of aluminum.  If the transformer gets too hot then it is overloaded and we need to find another transformer or power supply or reduce the load on it (cut off some of the LED string).
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