AVR(AC Voltage Regulators)
|--
Non-contact Electronic
|--
Sophisticated purification parametric
|--
Mechanical
CFP（Change frequency power supply）
DVR（Dynamic Voltage Restorers）
PIS（Power Integrated System）
Transformer
UPS、EPS
|--
UPS
|--
EPS
AC/DC
Instrumentation
SCR
text news
2008-3-25
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