little bit more help needed

Discussion in 'The Projects Forum' started by markosillypig, Nov 3, 2009.

  1. markosillypig

    Thread Starter Active Member

    Jul 21, 2008
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    Last edited: Nov 3, 2009
  2. CDRIVE

    Senior Member

    Jul 1, 2008
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    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.
     
  3. markosillypig

    Thread Starter Active Member

    Jul 21, 2008
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    where does j3 go ??
    i'm lost with this circuit now
    my hed is a shed
     
    Last edited: Nov 3, 2009
  4. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,159
    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?
     
    Last edited: Nov 3, 2009
  5. markosillypig

    Thread Starter Active Member

    Jul 21, 2008
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    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
     
    • done.jpg
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    Last edited: Nov 3, 2009
  6. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
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    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.
     
    Last edited: Nov 3, 2009
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