At 08:34 07.04.97 -0400, you wrote:
>Rainer
>
>Thank you for the explanation. The thing that was confusing to me about
>the purpose of the condenser was that it presumably has a higher
>capacitance than the open points. This higher capacitance, as you
>stated, causes the voltage across the points to rise more slowly. My
>thinking was that a higher voltage (due to a lower capacitance) at the
>points would cause the current through the coil to shut off more quickly.
> If I followed your explanation, this concept is theoretically true, but
>in reality, without the condenser, the voltage rises so quickly that the
>points arc and the impedance of the points goes way down allowing the
>current through the coil to take a long time to shut off resulting in
>little or no spark at the plugs. Am I on the right track now?
Yes, you are!
>One more question, is the secondary coil winding grounded at the coil? I
>would think it would have to be to create a complete circuit with the
>spark plug.
>
>Thanks In Advance
Sometimes it is sometimes it isn`t. Normally the secondary winding is
connected to the primary (low voltage) winding, the contact which goes to
the battery.
Sometimes it is connected to ground (=housing of the coil). I do not (yet)
know, which is the reason for the differences! And I am also working at the
problem why the polarity makes a difference in the spark intensity.
>Dan Pruzan
>71 Stag
>Santa Clara, CA
>
>Mechanical Engineer (who doesn't understand anything that can't be
>hit/fixed with a hammer)
>
Rainer Wallnig, electrical engineer, )trying to fix thrust washers with the
soldering iron by the use of colophonium)
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