[Spridgets] Fuel pump

[WFO Herb]

I think the NPN should be a PNP.Herb

On Wed, Sep 23, 2009 at 8:16 PM, Dean Hedin <dlh2001 at comcast.net> wrote:

> While we are on the topic of electric fuel pumps....
>
> I chisled out this circuit from National Semiconductor's application note
> 162.
>
>
> http://i295.photobucket.com/albums/mm135/brokencase_photos/circuits/pumpsafe.jpg
>
> It will only power on the fuel pump if the engine is turning over.
> I ordered the parts and should attempt to build the cicuit this weekend.
>
> I'll let you know how it goes.  If I make any alterations I will post an
> update.
>
> Use at your own risk.
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