Posted by joe csuti on January 14, 2013 at 13:31:58 from (151.198.123.132):
In Reply to: Re: Tecumseh HH100 posted by IrvIA on January 13, 2013 at 20:26:50:
With an electrical circuit that has an inductive load(coil)when the sw contacts or points open a back emf or spike voltage is generated up to 3X the supply voltage for a fraction of a second as the magnetic field in coil is collapsing
The function of the condenser is to absorb/quench this spike voltage to reduce voltage to as near 0V as possible before next close/open operation of points,this now gives max voltage buildup in coil primary & giving max hv to plug,without condenser or if condenser open/shorted voltage in primary of coil stays high & gives the same effect as points not opening,the condenser also prevents arching/burning of point contacts.
I've had the same experience as anon with several briggs eng with a bad/weak condenser,eng would be hard starting & only run rough at idle/slightly above & when you goosed throttle eng would die.
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