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12v timed circuit ideas???

Ngreenwv

Feb 22, 2013
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Feb 22, 2013
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I'm working on the fuel pump circuit of my rvs generator. I need the power coming to the 12v fuel pump to energize briefly about every 20-30 secs does anyone know of a simple way to achieve this any help much appreciated
 

Harald Kapp

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Nov 17, 2011
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Use a 555 timer IC (Google for circuits) and a power MOSFET to drive the pump. Do not use a mechanical relay, it will wear out rather rapidly at that rate.
 
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