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  1. hisystems

    Electrically Isolated Light indicator for a current carrying conductor

    @Skogsgura. your advice to use transformer plate and not a ferrite core, probably explains why I have not gotten anything reasonable with all my trials! in short,I have not cared about the core I was using. Thanks great guy!
  2. hisystems

    Electrically Isolated Light indicator for a current carrying conductor

    ok ,I am gonna try this out and possibly with different turns until I get something good. whats the risk or otherwise of using a ferrite transformer core?
  3. hisystems

    Electrically Isolated Light indicator for a current carrying conductor

    Thanks so much guys! Wonderful! Shorting out the LEDs when starting the pump may not always be a practical idea for my end user . Whatever device I use here should be able to survive at start and after start.However, I am thinking that 3000V rated LED should survive if that is available in...
  4. hisystems

    Electrically Isolated Light indicator for a current carrying conductor

    Thanks so much Skogsgurra. Its a single phase 1.5HP/230V motor, so its easy to sense the live or neutral line.The motor running current is about 5Amps. Could you throw more light on a practical PTC/R combination and an NTC in parallel, in achieving this. Are you referring to Positive and...
  5. hisystems

    Electrically Isolated Light indicator for a current carrying conductor

    I have a current carrying conductor for a motor pump and require to have an electrically isolated lighting indicator on this conductor. The light indicator should come on when current is flowing in the conductor and off when there is no flow of current. I need a practical simplest of circuits. I...

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