A simple circuit with the power supply leads connected to just a single 772 ohm resistor on a breadboard. [772 ohms as measured using a multimeter]. From the videohttps://www.youtube.com/watch?v=Oc98Et_OMCA&feature=youtu.be,you can see that I can't go past 7.07 V even when I turn the knob full righ…

Power supply phenomenon:Can't go beyond a certain voltage even when knob turned

Boardburner2 May 23, 2014, 2:41pm 6

The led does.

Try adjusting the right knob