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LM2596HV is a great buck converter capable of stepping down ~5-60v down to 2-60v.

Unfortunately there are many fake HV's.

I figured out (pretty sure) how to tell a fake LM2596HV from a real one. Feeling pretty smart about myself right now ;)


This vid is a good demo of the real vs fake but he doesnt have a method of confirming until you test it, but the differences Ive noted show up on the model that he tests as well.


Legit http://www.aliexpress.com/item/10pcs-4-5-60V-LM2596HV-DC-Voltage-Regulator-Power-Converter-F-Car-Charger-Vehicle-DIY-Step/543168158.html