Pulse DC method generate ions with two polarity by
applying "+" and "-" high voltage alternately on
positive and negative electrode needles.
Compared with power frequency AC method, the
utilization rate of ion generation is higher. And its
static elimination ability can be exerted no matter
in short or long distance. In addition, the
discharge frequency can be adjusted, which can
extend the discharge distance. The output ratio of
positive and negative ions can be adjusted, which
is convenient for intelligent control.
Decrease Tp so that the positive voltage acting capacity becomes smaller and the acting
time becomes shorter. Less positive ions and more negative ions output to neutralize
the excess positive charge on the surface of the object.
Increase Tp so that the positive voltage acting capacity becomes greater and the acting
time becomes longer. More positive ions and less negative ions output to neutralize the
excess negative charge on the surface of the object.
Adjust the duty ratio [Tp/(Tp+Tn)] to an appropriate ratio and send out the same amount
of positive and negative ions to neutralize the static electricity on the surface of the
object.
3 situations of static electricity on
the surface of the object
AC
High voltage power supply
Power frequency AC
T
+HV
-HV
Pulse DC
Pulse DC
Positive pulse
Negative pulse
T
Pulse DC
+HV
-HV
Pulse DC
Discharge effect is better compare to
frequency AC ionizing air blower
Pulse DC VS Traditional AC
（
Positive high voltage
）
（
Positive high voltage
）
（
Negative high voltage
）
（
Negative high voltage
）
Positive voltage working time
Positive voltage working time
Negative voltage working time
Negative voltage working time
