WTB: B&W 51SB-B Audio Transformer
Michael Black wrote:
Scott Dorsey ) writes:
Primary 20,000 ohms single plate 10MA DC
Secondary 500 ohms
Ahh, wait, you DID give impedances!
What you want is a 20K to 600 ohm line output transformer. I bet a nickel
Hammond makes one.
There was a time when everyone made them. If you were making a phasing
rig, you'd need those to interface with the B&W phasing network (the
ones that came in a package like a metal tube). The B&W seemed to
be the most common, but I think the other similar networks (Central
Electronics was another manufacturer) used the same sorts of transformers.
So look for a phasing rig, and the transformers will follow.
Michael VE2BVW
Michael and Scott,
Thanks for the tips. I did check Hammond and did not find anything
suitable. The 51SB-B does use the B&W Model 350 (2Q4) audio phase shift
network. I suppose my best bet will be to look for a junk phasing rig
at a hamfest.
Gene W3PM
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