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Compact Fluorescent Schematic

Discussion in 'Electronic Repair' started by hr(bob) [email protected], Oct 17, 2008.

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  1. hr(bob)

    hr(bob) Guest

    Has anyone ever autopsied a compact fluorescent bulb (CFL) and derived
    the schematic? I have a failed GE 13 watt - 180 ma CFL in front of me
    that has about 25 components including what appears to be a full-wave
    bridge rectifier, and capacitor (5 components), a choke, a
    transformer, two three-terminal devices that I assume must be
    transistors driving the transformer, and several resistors and
    capacitors. There also appears to be a mini-fuse in the hot lead
    coming from the base of the lamp. I know that is good, also the
    bridge rectifier is working. No signs of any oscillation from the
    rest of the circuit. No markings whatsoever on either of the
    transistors. A schematic, even a generic, would make looking at this
    thing reasonable when I get some spare time, otherwise it is into the
    garbage in a plastic bag to contain any mercury in the lamp.

    Bob Hofmann
  2. Franc Zabkar

    Franc Zabkar Guest

    This page has several reverse engineered CFL circuits:

    - Franc Zabkar
  3. hr(bob)

    hr(bob) Guest

    Meat Plow and Franc:

    Thanks much, that is just what I was looking for.

    Bob Hofmann
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