Dwell time as a %

Roy spectric at globalnet.co.uk
Mon Mar 3 20:54:55 GMT 1997


Tom Cloud wrote:
> 
> >Pardon my ignorance showing here, but I thought that coils will
> >saturate after a certain time, meaning they will only store a fixed
> >amount of energy.  The time taken to store this energy (reach magnetic
> >saturation) is a function of supply voltage.  Therefore if you want
> >say 50% dwell, and saturation at 13.5V is reached at say 5ms, then
> >your dwell time is 2.5ms.  Can anyone confirm this?
> >
> >Andrew Rabbitt
> 
> yep (probably more technically correct to say it's a function of
> current, but then I=E/R  :-)
> 
> Tom Cloud <cloud at peaches.ph.utexas.edu>
>
> a low impedance coil will saturate and draw such a current as to burn > out, the average coil has a dc resistance of just 1 ohm.



More information about the Diy_efi mailing list