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  1. brettduncan

    The effect on the primary when correcting the PF on the secondary

    Good day, If I correct the power factor (the kW remains the same) on the secondary of a transformer, will the primary power factor also be corrected? regards, Brett
  2. brettduncan

    MV flash due to leakage

    We installed a generator to run in cogeneration and standby mode with our utility company (Eskom - South Africa). We experienced a flash between neutral and ground due to creapage. I need to work out the voltage drop caused when the flash accured. I know that the reading taken before the flash...
  3. brettduncan

    Ferrite electromagnets

    Good day, I need to build a two dimensional magnetic levitation , but the problem i'm having is that the electromagnets are very sluggish in response time. Would a ferrite core work better then normal mild steel? I'm controlling the current with a PWM signal at about 4kHz. What other...

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