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Constant current dummy load in an HDD cooler

Posted on Wednesday, March 13th, 2013 in DIY by DP

dummyload1-W600

Kerry Wong built this DIY dummy load in a hard drive cooler aluminum case:

Basic constant current dummy load using an Op Amp and a by-passing MOSFET is very easy to build and had been made quite popular following Dave’s video on EEVBlog. I happened to have an old aluminum hard disk cooler case collecting dust. The die-cast aluminum case is relatively thick, making it an excellent heat sink. So I thought why not use it to build a dummy load myself?

This entry was posted on Wednesday, March 13th, 2013 at 9:00 pm and is filed under DIY. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Constant current dummy load in an HDD cooler”

  1. John says:

    Hi,
    Just wondering, how can I use the dummy load you created to test a negative power supply?
    Thanks!
    John

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