I need a 22 microhenry hash filter so will need to purchase a 22 uH ??
and will it have to be a medium current



will this do the trick ??
http://uk.farnell.com/epcos/b78108s1...22uh/dp/511614

and where does J15 connect to on this circuit ??

 

That 22uH is not critical and the inductor in your link should be OK. J15 is your common ground. I would imagine that whatever is being connected to the Fets would use this as its ground return.

 

where does j3 go ??
i'm lost with this circuit now
my hed is a shed

 

J15 is your common ground.

CDDrive, there are two J15s

Markosillypig,

The header J15 1-10 is your Vcc + according to tbe board top, going to one side of the load and the other side of the load is going to your POWERMOS, the BUK 453-100, via J5 through J14 ... The other J15 is a common (ground) test point.
,
Which J15 were you referring to?

J3 is the reset to your CD 4017.

Do you know what this circuit is doing?

 

right i have finished the assembly first of all witch is the vcc+ i may have got it wrong
then there are 2 sets of ten pins set A and B what is the configaration between them and the fets

photo of circuit board attached


ps i hope to power leds in a chaser fassion

 

Ok, the 10 headers titled J4-1 throught J4-10 are so you can jumper that to the RESET IN, J3. This gives you the opportunity to reset the counter at anytime other than 10.

You do not have any single header pins on your FETs, they are labeled J5 through J14 on your schematic and board. Those "source pins" are where the other side of the load is connected to the FETs.

Your unknown is J15 ... the one on the schematic that is ground.

You appear to have the red and black wires reversed in your done photo.

You need to add single header pins for J3, J15 (ground), and J5 through J14, the source pins of the MOSFETS.