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FS: Vintage BBC transformers LL/88 ASC & LL/81 M

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robomix

Well-known member
Joined
May 1, 2006
Messages
47
Location
Hamburg
I have a couple of BBC transformers from an old radio broadcast desk for sale.

20 € each (4 pieces / one type 70 €) + shipping (i will ship worldwide; please ask for a quote!)

contact: [email protected]

LL/88 ASC:
35mm in diameter and 40mm in height with bush mount.
ex-BBC audio input, output or isolation transformer
1:1  600:600  Mu-metal can

WHITE Shield 
YELLOW-BLUE PRI  32 Ohms  DC
RED-GREEN SEC  55 Ohms  DC
Primary: Yellow (+) / Blue with the White wire as a centre tap
Secondary: Red (+) / Green

http://groupdiy.com/index.php?topic=47901.msg603814#msg603814

gpultec input
http://groupdiy.com/index.php?topic=52634.msg671800#msg671800



LL/81 M:
26mm in diameter and 24mm in height with bush mount.
1:1    10k:10k bridging transformator (?) Mu-metal can

BLACK Shield
YELLOW+ BLUE- PRI    320 Ohms DC 
RED+ GREEN- SEC    411 Ohms DC 

Ratio = 1:1
Primary Inductance = 49 Henries
Primary Reistance = 316 Ohms
Secondary Resistance = 405 Ohms

http://groupdiy.com/index.php?topic=40862.msg506487#msg506487


 

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