The most common load of such kind is hair
dryer. If the noise comes from case.
Normally when loaded with inductive loads,
the magnetic field generated by transformer
keeps attracting or releasing the steel case
at a specific frequency, this may also cause
noise.
This noise may also be generated the mo-
ment a load is detected in the power saver
mode.
Reducing the load power or using an inverter
with bigger capacity will normally solve this
problem.The noise will not do any harm to
the inverter or the load
s.
Figure 1
Half Cycle Waveform
OUTLINE DRAWING
26
