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Old 20th Feb 2021, 6:40 pm   #337
beery
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Join Date: Jun 2006
Location: Ware, Hertfordshire, UK.
Posts: 988
Default Re: Baird T5 restoration project.

Hi David,
can you measure the scan coil resistances for completeness? It would be interesting to compare them with my Garrick which is a development of the T18.

I've measured the resistances and inductances of the windings on the T5 line output transformer. They are:-
1st winding, Brown leads, 322ohms, 2.5H
2nd Winding, Brown leads, 59 ohms, 635mH
3rd winding, Yellow leads, 55 ohms, 406mH

The leads for the start of each winding emerge from the top of the transformer and the leads for the end of eacj winding emerge from the bottom of the transformer. As the transformer is mounted on its side in a drop-through style then it really does not matter which way round it goes. Well it does now of course because the wires having been cut to length when the set was made will now only fit one way! Anyway, the idea of having all windings start on one side and finish on the other is very clever in its simplicity and also fool proof.

Cheers
Andy
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Last edited by beery; 20th Feb 2021 at 6:43 pm. Reason: Typo in inductance figures
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