[Heathkit] HW-16 pic: Do it my way, get a big surprise!

Tom NØJMY - AAR7FV tfarl at mchsi.com
Wed Mar 16 00:12:06 EST 2005


Well, I kind of stepped on Richard when I posted that pic!  Now, I 
remember why I didn't post it before.  The careful observer will note 
that the red insulated wire attached to the positive side of the 
doubling cap in the middle (on the lug above the left end of the 100 ohm 
resistor) is wired directly to GROUND(!)

Speaking of "The Boy Electrician!"

Needless to say, it belongs on the next terminal to the right. 
Fortunately, I caught this before soldering it all together, but not 
before I took the pic.

Also, I forgot to mention, but you probably noticed that I removed the 
rearmost band-switch wafer (no unsoldering, just removed the nuts and 
slid it out of the way).  Sometimes I think it's just as easy to break 
it in half.  And yes, I *did* re-install it when it all went back 
together!

The second-time.

73,
Tom

----- Original Message ----- 
From: "Tom NØJMY - AAR7FV" <tfarl at mchsi.com>
To: "glowbugs" <glowbugs at piobaire.mines.uidaho.edu>
Cc: <heathkit at mailman.qth.net>
Sent: Tuesday, March 15, 2005 9:42 PM
Subject: GB> HW-16 wiring pic:


>I found a picture that I took of the underside of a HW-16's power 
>supply section during a recent re-cap.  This was taken prior to 
>installing the new resistors and soldering the various connections, in 
>case anybody wanted to see what I was talking about when I mentioned 
>substituting terminal strips for the old capacitor terminals.
>
> www.theponyengine.com/HW-16ps.jpg
>
> (Note: on this job, I sawed off the bottoms of the old twist-lock 
> multi-section cap and drilled holes through the wafer to feed the new 
> cap leads through, then glued 'em down. The two doubler caps were just 
> glued to the old dielectric mounting wafers.  Looking at the (2) 
> three-post terminal strips on the left, the resistors will lay 
> side-by-side between the strips, 33K, 2.2K, and 330 @ 5W from left to 
> right.  The 2.2K will have it's leads in a zig-zag from the lower left 
> to upper right terminals.  The other two go straight up and down.
>
> Also, there will be two 100K attached to the lower right terminal, one 
> of which loops back to ground (bad choice of words), the other 
> zig-zags to the ungrounded lug just above the brown 100 ohm 10W 
> resistor.  Also, note the ungrounded lug at the far right of the 100 
> ohm resistor which is angled to make it easier to remove the lead from 
> the RFC and the (unseen) cap when neutralizing.
>
> The upshot of all this is that there is more room to work in, and you 
> don't have such a rat's nestthere was when the *other* guy built the 
> rig to begin with.   ;^)
>
> Food for thought.
>
> 73, de
> Indigestible Tom
>
> 




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