Others, like the Ignitor, are solid state replacements for the points...the
Ignitor uses a Hall effect (magnetic) switch.
At 6:03 AM -0800 12/18/97, Kenneth Scott wrote:
>The coil is a large inductor whose magnetic field stores
>energy until it is changed (by the breaking or openiong of the
>points). The collapsing magnetic field in the primary circuit
>caused by the cessation of current due to the opening of the
>points causes a large voltage spike in the secondary, hence,
>spark. Most CD electronic ignitions work, I believe, in the
>opposite way. The coil is normaly non-energised and the
>spark is generated by dumping the contents of a capacitor
>across the primary of the coil at the time the spark is
>desired. I do not know how other electronic ignitions work.
>Ken Scott 77 MGB
|