Reverse engineering a counterfeit 7805 voltage regulator
Super informative post. Thanks for sharing.One thing I didn't understand was the author's comment that "I bought the part off eBay, not from a reputable supplier, so it could have come from anywhere."A 5-pack of quality 7805's can be found on Amazon for $5, including Prime shipping, (e.g. http://amzn.com/B00H7KTRO6),  so what's the incentive to buy parts of unknown provenance on eBay or the like?I ask not being a hardware guy myself, so genuinely curious, as I've heard stories like this before.Again, fantastic overview of the chip, though. I learned a lot.[Edit: spelling]