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Description There is no phase angle shift in Delta – Delta or Wye-Wye transformer. However, there is 30 degree phase angle shift in Delta-Wye transformer. Many articles take that as a fact without any explanation. Articles also state that high voltage side leads the low voltage side by 30 degree. That conclusion does not make […] Problem Dell Inspiron N5110 does not work when powered by battery only even though it showed battery was installed and charged. Solution There were two metal clips on battery connector inside Dell laptop which were held in place by spring force. If they wiggled free and fallen inside the computer (as shown), it might short […] |
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