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How does the light work???

Discussion in 'Mechanic and Repair' started by mcwlandscaping, Sep 5, 2005.

  1. mcwlandscaping

    mcwlandscaping LawnSite Gold Member
    Messages: 3,163

    Don't know if this is the correct thread, but ill put it here anyway! My question is, how does the light on my snowblower get power if there is no battery on the unit? Just when i start the engine the light comes on and when i shut it down, it turns off (what a surprise!! :p ). Thanks for the responses! :p :p
     
  2. briggsman65

    briggsman65 LawnSite Member
    Messages: 22

    As with anything be it a car or a lawnmower. The battery is used to start a motor and after that everything runs off of a generator/alternator. While the motor is running the alternator/generator charges the battery so it can start the motor next time. Hopefully this answers your question.
     
  3. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Messages: 2,613

    There is a charging coil on the engine, much like how a alternator on a car engine works.
     
  4. grass_cuttin_fool

    grass_cuttin_fool LawnSite Gold Member
    Messages: 3,526

    Its called a magneto
    mag·ne·to ( P ) Pronunciation Key (mg-nt)
    n. pl. mag·ne·tos
    A device that produces alternating current for distribution to the spark plugs, used in the ignition systems of some internal-combustion engines.
     
  5. ed2hess

    ed2hess LawnSite Fanatic
    Messages: 14,460

    I repair them but don't know names....the device that converts the AC to DC is called a magneto?
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029


    Now that everybody knows the proper name and function of a coil, I believe they were talking about a Stator.
    There are two type stators used on small lawn & garden equipment engines.
    One type stator puts out direct current (DC) and can be wired directly to the wire harness on a given type unit. The other type puts out alternating current (AC) which must be connected to a voltage regulator which in turn converts the alternating current (AC) to direct current (DC) at which point it then can be wired into a wire harness on a given type unit.
     
  7. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    That device is called a Voltage Regulator.
     

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