DIYPNP Fuel Pump driver transistors

Discussions relating to Turbochargers, Superchargers, Induction, Engine Mods, Exhaust Mods, and other items specifically to make your MX5 or Roadster put out more power.

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RMS
Need, more, 5-ing, time....
Need, more, 5-ing, time....
Posts: 113
Joined: Tue Sep 28, 2010 9:09 am
Location: Auckland

DIYPNP Fuel Pump driver transistors

Post by RMS » Tue May 03, 2011 5:38 pm

Despite putting it in big bold writing on my startup checklist I still somehow managed to forget to remove the ST SIG fuse when I first fired up my new DIYPNP.

result = smoke and tears.

anyway, I have a dozen TIP125 transistors on their way up from CHCH so if anyone in the auckland area needs one I would be happy to sell you one, seems Jaycar/DSE don't have this sort of thing? shipping from the US is silly for a $1 component.

Euen
I am quitting my job and going 5-ing
I am quitting my job and going 5-ing
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Joined: Tue May 23, 2006 9:42 am
Location: North Shore

Post by Euen » Wed May 11, 2011 2:31 pm

RS Components (on Gt South Rd, Penrose) list them as in stock and will sell them singly. $1.35 ea, prob +GST.

http://newzealand.rs-online.com/web/sea ... &x=15&y=13
TG Sports, classic roadster - modern technology. NA1800, 99 head, 11:1 +2mm Wiseco pistons, Link LEM, Alloy f/wheel, JR headers.

RMS
Need, more, 5-ing, time....
Need, more, 5-ing, time....
Posts: 113
Joined: Tue Sep 28, 2010 9:09 am
Location: Auckland

Post by RMS » Fri May 13, 2011 3:06 pm

Ah thanks,

I ended up changing things to directly ground the wire in the AFM plug that comes from the circuit opening relay by connecting it to the fuel pump pin in the megasquirt via the 2O pin (4O on the MS).

This eliminates any future possibility of c**king things up again :)

Will have to find something else to do with my ten TIP125's now.

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