6
in series.
The 5V output is generated by dropping a 7.5V current through a linear regulator without
the use of any switching power circuit.
Your device provides the so-called “audio grade” pure DC current.
The waveform of UPower at 5V/500ma output is a pure clean DC current as shown on the
oscilloscope screen.
The waveform of other mobile power supplies at 5V/500ma output, as shown on the
oscilloscope screen, have pulses of a magnitude up to 0.7V at 340KHZ.
