Dropping 9vdc, from Switch Mode wall wart, down to 3.3vdc.
Setup: See jpeg
PSU set to 9vdc, 0.3a, Floating GND
DMM set to volts, input tied to V Reg Output, GND tied to PSU GND
V REG = Authentic Microchip MIC 29300_3.3v - Input tied to PSU Output - ..
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