pulsing coil input

[Greg Hermann]

>> Trying to create a replacement for an ignitor module for a small gas turbine.
>> What would be the easiest/cheapest way to provide a 5-10 cps 12v primary
>>input
>> to an automotive coil?
>
>I would suggest a 555 timer, driving a mosfet or large
>bi-polar transistor.  Just make sure you put a diode across
>the oil facing the wrong way to act as protection device
>against back-EMF introduced into the transistor by the coil
>upon magnetic field collapse :)

Or you might just try an igniter for a pilotless domestic gas furnace--

Greg
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>Frederic Breitwieser
>Bridgeport, CT 06606
>
>http://www.xephic.dynip.com
>1993 Superchaged Lincoln Continental
>1989 500cid Turbocharged HWMMV
>1975 Dodge D200 Club Cab (soon to be twin turbo 440)
>2000 Buick GTP (twin turbo V6)