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  • Overall Rating: 5
  • Price: 5
  • Quality: 4
  • Ease Of Use: 4
  • Usefulness: 5
Inexpensive, linear buck drivers – AMC7135 1050mA Regulated Circuit Board for DIY Flashlights 10-Pack Reviews

posted by chimo on 01/19/2008 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

-Inexpensive -Can disable/remove 1 or 2 of the 7135s if a lower current is desired -Thermal protection works
-one of the boards had a mis-alligned 7135 soldered on
-contact pads could be better marked
Since this was a 10-pack, I tried pushing a board to its thermal limits by running it at full load and a varying input voltage to test how far it could be pushed. The thermal shutdown kicked in, and the 7135s shut down until they cooled enough to restart. The cycle was repeated.
Thisis not recommended for an implementation method, but it's good to know the thermal regulation works.
A good value


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