[Diy_efi] Flyback Diode (was 555 timer...)

[Paul Bidmead]

beg my pardons....... i am using a different FET after i cooked a few '640s 
from a low R injector on my gen-set
i then went to ecuv2.0 with the surface mount FET rated at 60v 40amps and a 
2" sqare heatsink i havnt blown one up yet (touch wood) but it doesnt get 
hot.
im not sure if im driving it too hard but it "seems" not to mind

//BidSpec

----- Original Message ----- 
From: "mike turner" <yardcooliediy at charter.net>
To: <diy_efi at diy-efi.org>
Sent: Saturday, July 09, 2005 6:11 AM
Subject: Re: [Diy_efi] Flyback Diode (was 555 timer...)


> The integral diode is generally slower than the external diode. This 
> raises its dissipation above that of a faster diode. Also, using an 
> external diode moves that dissipation off the mosfet which might be needed 
> if you have omitted the mosfet heat sink for the bench test. :)
>
> Mike Turner
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>