David Breneman wrote:
> --- On Sun, 9/14/08, Paul Hunt <paul.hunt1@blueyonder.co.uk> wrote:
>
>
>
>> If flicking the points open shows no spark then either the
>> condenser *is* shorted, or there is no 12v feed through the
>> coil.
>>
>
> My understanding is that in a circuit like this, the condenser
> is there to prevent arcing at the contacts. The condenser takes
> over the load from the air gap. I was looking at this in
> bright daylight, so if there was a small spark I would not have
> seen it.
I was taught in electronics school that the condenser is required to create a
"tank" circuit, not just for arcing control. The combination of a capacitor and
a coil creates the storage of the energy that provides the spark when the
circuit is interrupted.
-The Roxter
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