Re: Interstage Audio coupling transformer
Hi Chris, can you post a picture of the transformer.
Cossor often used their own design of transformer can with "Cossor " imprinted on it. These were not a good quality part and were often replaced with a similar 3:1 device which was readily available then. These were 2 winding transformers and common in the 235 series of sets.
A cheaper option was sometimes to replace them with an RC coupling unit which would appear to be o/c on a continuity test. This did reduce the gain of the set.
From memory there were often 3 bobbins inside the can; 2 sec, 1 pri, so not too difficult to rewind, but a few thousand turns on each of 0.05mm wire. It can take a while !
Ed
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