>> http://www.mouser.com/ds/2/418/NG_CS_CLP00011_A_CLP00011-740539.pdf
>
> Those ones are PTC

Oooops, sorry, didn't notice

> Inrush current limiters are usually NTC thermistors, used to limit "cold
> start" inrush current by starting off with a high resistance and lowering
> as they warm up

What an age we live in

The only experience I've had with big in-rush thermistors are pulling the
black disc ones off the boards of TV PSUs for the parts box

Which means .......... hmmmm, it means something........ it means .......

[gasp]

SomewhereinmypilesandpilesofreclaimedcomponentsIhavesomein-rushthermistors

> Some good info here:
>
> http://www.ametherm.com/inrush-current/surge-current-causes-and-preventio=
n.html

Thanks. Even the littlest thermistor of them all, SL32 0R230, seems as
if it might do. I'd like to know its resistance at much lower amps though.
DC resistance of either motor is ~ 1 ohm

> Another option is to use a fixed resistor, and that may suit your needs
> perfectly well... limits the maximum current at all times.

The person who had the product before him wanted more power from
the motor so passively limiting power is possibly out.

That said, a thermistor / FET are resistance, as is the sense resistor, poo=
r
choice of cabling, connecter, PCB trace ......

Joe=20



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