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Fuel injector driver? HELP! PUBLIC

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Created April 15, 2013
Last modified May 09, 2013
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What i need to achieve is a 12v or earth pulse of around 2ms variable from about 3hz to 3khz! PLEASE HELP?? I'm trying to build a variable speed fuel injector driver for a jet engine I built and I just don't know anything about circuits! in this R3 is actually a 10k ohm pot (its just easier to test like that) and the relay represents the injector. all advice gratefully received!

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