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Leakage Inductance as applied to Gas Bulb Transformers

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  • Harvey Norris
    Came across some interesting electrical definitions on Wikipedia from a search starting with negative resistance, also mentioned here... Leakage inductance is
    Message 1 of 1 , Jun 19, 2005
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      Came across some interesting electrical definitions on
      Wikipedia from a search starting with negative
      resistance, also mentioned here...

      Leakage inductance is that property of an electrical
      transformer that causes a winding to appear to have
      some pure inductance in series with the
      mutually-coupled transformer windings.

      Usually, this is an undesireable property, but it is
      sometimes deliberately introduced into a transformer
      that is used as a ballast for a gas discharge lamp
      such as a neon sign, fluorescent lamp, or a
      high-intensity discharge lamp. In this case, the
      leakage inductance limits the current flow to the
      desired magnitude. (Without the leakage inductance,
      the negative resistance characteristic of these gas
      discharge lamps would cause them to destroy themselves
      by conducting too much current.)

      Leakage inductance is primarily controlled by the
      design of the magnetic core used to form the
      transformer.

      HDN/It is interesting to note that the smaller 4 inch
      neons I use for experimentation have a working voltage
      range of only 200-260 volts. However the resonant
      voltage rise system made from the alternator 480 hz
      .15 henry coil systems can produce 600 volts, whereby
      its current limitation should be the impedance of the
      .15 henry coil branches themselves where these are
      some 450 ohms. The stator voltage for most tests were
      15-20 volts whereby 20/450 would be a short delivery
      of only 44 ma. However 30 ma may be the "amperage
      limitation" for these diameter bulbs. In any case the
      resonant voltage system will not light the bulbs
      themselves, but if put in series with a ferrite
      conduction they will light. The second generation
      resonant rise , using 1000 ohm high induction coils
      will easily light the neons themselves without
      additional ballasting.

      The next definition concerning negative resistance
      itself mimics the ferrite conduction principle.
      HDN










      Tesla Research Group; Pioneering the Applications of Interphasal Resonances http://groups.yahoo.com/group/teslafy/
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