[CJ]

peerless made some good stuff, so wtf, over? 

i'm jus sayin...

[CJ]

wagner makes a good heat gun, the black and decker finally fried from too much stress,
too many dissections, if you need a heat gun at OSH, it goes something like this:

tool barn>electrical dept>paint dept, as these are used for paint stripping, go figure, but 29 bucks, so hey, wtf, over?

check this:



pull that bad boy out>

interesting guide pin semi WE type
notice anything differentabout the lam grain?>
other side, comes right out with the screwdriver>


nice lam, eh?
laced 4 x 4, stretches the B-H curve out...


jig saw core
notice how the small holes let the polycrystaliene wax penetrat the lams
i thought it was for flux routing, but maybe not,


the letter what?>


coils, ...well doh!>

[CJ]

this is a first, groovy colors for the winder to flash on>
noticed the cooked wire, somebody had an accident, 

[electrochronic]

CJ,

Was it standard practice for a winder to splice a broken wire during a wind session to save it ?

or did they just just kick it to the curb.

Nice transformer binge lately.

[CJ]

"thou shall not splice"  is hung up in every winding shop,

unless it's 1/2 by 4 copper buss, 

never seen one splice with all these dissections,

have i ever done it?




































i ain't a sayin...

[rotation]

Fantastic work, CJ. It's good to see you back. I just sent pics of this one to a friend, we have never seen lams of this shape.
What are those colors for?

[electrochronic]

tropical fish transformer, reminds me of the tropical fish non polar striped caps

were those bobbins wound on a rectanglar jig or is there a phenolic or plastic bobbin frame in the
middle or center ?

[rotation]

Insulation between layers?

[CJ]

lots of paper in this design,



finish layer note the spacing,


da chronic, here are the kraftpaper core tubes:



Peerless 16402

Pri: 10 Layers of #36, 240 turns per layer = 2400 turns per coil = 4800 total pri. turns.

Sec: 4 Layers of #29, 97 turns per layer minus 1 turn  = 387 turns per coil = 774 total sec. turns .

Turns Ratio:  4800/774 = 6.20:1

[CJ]

so why am i all freaked out about this?>



because of this>


.
.
.














.
.
.

















.
.
.








    oh happy day,  praise the Lord of Transformer!




finally!  only took like 5 years, but hey..


i'm jus sayin...


we GroupDIY, we Bad


oh,  i almost forgot,  compare the wire gauges on the print, with the wire gauges posted for the dissection,

wtf, over? 

[AnalogPackrat]

Neat one.  I don't suppose anyone makes those lams anymore, eh?  Glad to see you back on the disassembly job.  I guess the rivers must be dry by now 

[CJ]

nobody stamps that lam anymore,

mike at magnequest has about 50 lbs, but he won't sell it to me, i tried like 18 times,

if you want to build an output like the original, you have to take apart something else,

only problem was, until now, is which transformer out of all of them share the same lam,

i do not know how many 16402 xfmr's there are out there, possibly other models exist with that lam,

the utc L lam is the same size, from the ls series, but no rounded corners or wax holes, and material?

next i am going to wind a S 217 D using the core tubes from the dissection, should be a kick,

when i saw it wasn't a c core but a L lam, i didn't know weather to sh*t or go blind! 
 

[vari-mu]

       
CJ,
there is the legendary L !2 of  S-217D ?
What size, thickness? Steel 96% FE 4% SI, or the other?
Thanks .

[CJ]

yes, that is the famous lam with the holes in it, same style as e 204 d, stack 4 x 4 as it is an output,

[helterbelter]

Man.... You should have your own Meta "CJ's Transformer Autopsy Room".



(With an additional "CJ's Slang Dictionary". )

[drpat]

Holy sh*te! L-12 lams! 

Man, it's good to see you back to your old self CJ!

[CJ]

hey Pat word up, G's down, chillin it , hey, you still have any pultecs ?

see if you can measure the inductance and dcr, you do not need to unsolder anything, just disconnect the output cable from the sec, and a cold vacuum tube will open up the pri.

i will diy a s 217 d on these 16402 = s 217 d core tubes, measure the inductamce and dcr against yours, it would be a step towards getting the real xfmr without evilbay ripping us off.

[mitsos]

Peerless 16402

Pri: 10 Layers of #36, 240 turns per layer = 24000 turns per coil = 4800 total pri. turns.

Sec: 4 Layers of #29, 97 turns per layer minus 1 turn  = 387 turns per coil = 774 total sec. turns .

Turns Ratio:  4800/774 = 6.20:1

Hi CJ,

So was this 16402 wound 1/2 pri, 1/2 sec on each bobbin, or were the windings sectioned?
thanks!

[CJ]

that guy goes 2400T #36 pri then 387 #29 sec on each coil, connect F-F to keep both coils in phase,

i corrected the erroneous 24000 number in the post

cj

[mitsos]

Thanks!!

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