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On Power Supplies

A project log for WiFi LED Lamp

ESP8266-equipped decorative lamp

sukasaSukasa 09/21/2016 at 18:480 Comments

So, it's always a good idea to check your power supplies when you pull them off the shelf at your local makerspace.

I pulled a "6v" supply off the shelf and began using it, and I must have been really lucky that it lived long enough for me to disconnect the PNP transistor from my ESP8266 and put an NPN transistor in the way, as it somewhat "broke" afterwards. Instead of putting out 6v, it jumped to 8.5v in to my circuit, which wasn't ever meant to handle more than 5.5-6v. I'm honestly surprised the little SOT23 regulator feeding the ESP8266 didn't cook itself. Let alone the 4.5v LEDs getting nearly 8v.

(On the bright side, the ESP8266 has some seriously durable inputs. I really should have blown that chip up, but it survived quite happily)

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