Peerless 15036 Repeat Coil 600:600

this coil has a rep, heck,  most of the Peerless stuff does,

used in Altec 468a  and probably elsewhere,

600:600 repeat coil, probably used for high quality phone lines in the last mile,

pinout

runs flat 10 to 100K  which is not hard for a low turns 1:1

ain't gonna do no 23 db at 20 Hz, sales people forgot to spec the frequency imagine that,

might do 8 db at 20,

primary inductance is pretty high for a 600 job, only one that beats this inductance is the Tamura,

measured at about 1.5 V-rms input

What's the dcr for that inductance?

Henries is big enough for it to act as a 10K:10K

Cheers

Ian

glad you asked,  we have it here on the print,

mixed core, 3/4" stack, Supermalloy mixed with a little 50/50

this coil might have been "borrowed" from the UTC LS140, which has the same winding structure, 800 turns, bi fi wound and with dual shields, the Peerless has an additional copper wrapper around the outside of both coils,

Looks lke about 10 ohms per winding so about 20 for 600 ohms. Very good. If I am right, 90H at 20Hz for 880 turns is an AL value of  over 100 microH.

Cheers

Ian

finally found the USB cable for the camera so we have a couple of Peerless pics,

nice hefty copper shield,

and there is your mixed alloy core with the tons of splices>

E204D is the same or different?

What is the stack mixture about? What aspects asks for this?

Last summer we lost Mike LaFevre who owned all the IP for Peerless/Altec transformers. I am working with his daughter but we have all the drawings which includes this model. I actually have about 10 that Mike wound for me in various configurations but with less terminals and not in cans.

What do you mean by "IP"?

Intellectual property

Hey danfeank, is there a non essential blue print that you could share, not really interested in turns and laminations, but would love to see the format of the print, the testing instructions,etc, you can blank out all the data if you want, that would be killer!

Every company had their own style blueprint and it is fun to see the difference, Thanks, cj

Hi CJ,
I’m obsessed with transformers but honestly, the only one I’ve ever unwound to see what the specs were was a blown output from the original run of Sovtek MIG50 guitar amps. They ran crazy voltages through them (560v) and the between layer insulation was thin paper, like an old school lunch bag from a long time ago.
The only thing I didn’t write down was wire gauge sizes but if memory serves me it was 19ga on the secondary and 27 on the primary but don’t quote me on that. Also, the layers go in reverse… I numbered them as I was unwinding the coil.
Wish I had more to offer… Sad thing is that I’ve had all the super desirable outputs sitting around just waiting to be used for amp building. At one time I had six (6!) 16431s, several HK Citation 2 outputs, I even had a pair of outputs from Mac MC3500s but all those are long gone, unfortunately. Ebay used to be cool like 20+ years ago…. Lol

I was after a Peerless factory blueprint form, like something the engineer would fill out to give to the winders, does not have to include any data,