fet servo choke help needed please

[fidspeed]

I apolgise firstly because i know this will have been covered before somewhere
i have come across a couple of old ko fet servos which are still in gwo but i remember having to wire a choke into the lead fronm speedo or positive battery feed but i'm buggered if i can remember its spec

4.7 or 47 somethings or other rings a distant bell but only faintly can anyone help ?

thanks dave

[colmo]

http://www.maplin.co.uk/module.aspx?moduleno=3660

4.7uH (microHenrys) I believe.

[sldmodels]

I've got some Mtroninks ones knocking about somewhere. I'll have a look for them (not many people use them anymore). PM me your details and we'll get you sorted.

[bodgit]

This was the post
http://www.oople.com/forums/showthread.php?t=33109
as its say when you solder it inline put some heatshrink over it.