Correct, but I'm surprised that it took that long.  In some ways I=20
should understand, as this is almost the bare minimum current that would=20
make it open (lowest I saw that would open it was ~1.4A, but I did not=20
scope that), but I would've expected to see some movement, even if just=20
a budge, starting earlier.  Just surprising, or enlightening, I guess.

Cheers,
-Neil.




On 12/15/2015 7:42 PM, Dwayne Reid wrote:
> Hi there, Neil.
>
> I don't find that behavior odd at all.  The injector armature has
> some mass, which takes time to get moving.
>
> dwayne
>
>
> At 10:55 AM 12/15/2015, Neil wrote:
>> On a side note, I tried using a peak-and-hold injector as a regular
>> high-impedance injector, with a 5.5-ohm series resistor to limit the max
>> current, similar to what some automotive ECU's do.  This behaviour was
>> interesting.  Note that the max current is developed in 2 ms, but then
>> the injector does not begin to open until at least another couple ms
>> later.  I just find this odd.  The current here is measured across a
>> 0.05-ohm sense resistor between the MOSFET source and ground.
>> http://tinyurl.com/za44qlz
>

--=20
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