[450] Fwd: Today's project

Mon Mar 11 11:45:25 EDT 2013

Thanks George!

On Mon, Mar 11, 2013 at 9:38 AM, George Andrews <gandrews at ntplx.net> wrote:

> Bob,****
>
> ** **
>
> Looks very professional! Quite a craftsperson you are.****
>
> ** **
>
> George****
>
> ** **
>
> *From:* 450-bounces at lists.vhfwiki.com [mailto:
> 450-bounces at lists.vhfwiki.com] *On Behalf Of *Bob
> *Sent:* Sunday, March 10, 2013 7:13 PM
> *To:* 450
> *Subject:* [450] Fwd: Today's project****
>
> ** **
>
> Having acquired the 100 amp switching supply, next step is to make it
> useable in the shack.  Metering, power connections, etc. aren't part of the
> package when you get one of these things.  Having a "temporary shack", I
> needed a way to add these things without building it all into the shelf for
> now.  Further, I needed to do it in a way that would allow me to use it at
> the full 100 amps if necessary, so it had to be heavy duty.  Here is how I
> did it.
>
> [image: Inline image 1]****
>
> Two meters nestled nicely into the front of an old speaker cabinet.
>
> [image: Inline image 2]****
>
> The cutting didn't go to badly this time!
>
> [image: Inline image 3]****
>
> 5/16 binding posts.  The two on top are positive, the two on the bottom
> are negative.  I still have to mark them, and make a cover for the back for
> after all lines are connected.
>
> [image: Inline image 4]****
>
> Here are the binding posts from the inside, keep in mind all connections
> need to support the 100 amp concept.
>
> [image: Inline image 5]****
>
> Overall, looks fairly professional for junk parts (rubber feet
> even!)....only the meters were purchased, $12.00 each online.
>
> [image: Inline image 6]****
>
> You can see here the #4 cable in place to plug into the output ports of
> the supply which will be mounted to the four pads on top.  They route into
> the box via teflon bushings.
>
> [image: Inline image 7]****
>
> Another view of the top.  The extra bushing is to route the case ground
> wire.
>
> [image: Inline image 8]****
>
> An overview of the inside.  Note: everything giant and bolted for power
> connections...those lugs to either side of the shunt (center) were formerly
> used to connect the 1/0# ground wire to my towers at the old shack.
>
> [image: Inline image 9]****
>
> More overview from back...
>
> [image: Inline image 10]****
>
> ....and from the front.....
>
> [image: Inline image 11]****
>
> Here is the shunt set up....the main reason this needed a box to begin
> with.  This must be well isolated and firmly mounted as the entire thing is
> "hot", both polarity AND temperature.  Without it, there would be no
> current measurement.
>
> [image: Inline image 12]****
>
> A close up of the shunt and it's mounting.****
>
> So there it is.  Still some finishing touches to do, maybe meter light,
> maybe a few switches, but overall ready to mount the Powermax 100 amp
> supply to and put into service.  Hope you enjoyed the tour!****
>
> Bob N1UJS****
>
> ** **
>
> ** **
>
> _______________________________________________
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>
>
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