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You can't just hook a coil up to a battery and get spark, the reason is that you need to energize the field around the
coil and then collapse it in order to get a good spark or even a spark at all. This is a very simple circuit I devised
to turn the field on, and off with direct current. A flasher from an automobile is used as a timer, its just easier to run
and get one, than build a 555 circuit. It trips a contactor - not the coil itself, this would pull way to much current. A
condensor (capacitor) must be used at the contactor (solenoid), in order to prevent arcing at the contacts, or it will burn
out very fast. The condensor also makes the collapse of the field much more rapid and intense. They all must be in the right
place and properly grounded to function properly. This is very high voltage after the coil and is a shock hazard, so
extreme caution must be used when in operation. If you build one similar to this you must be careful, do so at your
on risk. The light in the schematic is not necessary, but provides a good indication that the ignition is on when the engine
is running and you can't hear the flasher.
Gas Turbines are dangerous and I do not promote
the construction of one by unqualified persons. I am not responsible for any injury you might cause to yourself or others.
By constructing one you accept all responsibilities that are associated, any information provided by W. Clint Davis, or www.wclintdavis.com is provided purely for educational purposes.
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