Class D amplifiers
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Simulated time-domain (transient) response.
Here is a picture showing the complete version 2.1 amplifier simulated
transient response. The input signal is a 10kHz sinus wave, seen as the red
signal barely departing from the zero level. The simulation spans 40 Ás, i.e.
not quite a half period of the input signal period of 100 Ás. The filtered
output signal is the greenish staggered one that begins below -10V to the left and
slowly works its way upwards as time progresses. It is the amplified inverse of
the input signal. The blue signal is the voltage at the unfiltered output, and
the yellow signal is the voltage after the swing-raising circuit, i.e. the
voltage driving the output transistors.