• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Parmeko gresham transformers specifications

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Well, All I can tell you about them is they were extensively used in Military equipment...

There are various ranges, some pretty standard EI type transformers, others like the Neptune-Series are hermetically sealed, oil filled devices.

I personally have a few kicking round and have used them in various projects in the past.

Very good quality transformers IMO...Often some on fleagay, however, some are commanding daft money by the 'get-rich-quick' scrappem guys on there....
 
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