UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Winding a new output transformer for a Philips B5G64A Radio

Ed_Dinning · 22nd Jun 2021, 9:17 pm

Hi, I think your figures should work just fine, interleaving will only improve matters and as Joe says the yellow polyester tape is great for insulation between windings.
You can use grade 2 (double enamelled) wire for both pri and sec, but many winders simply use grade one on the output transformers where insulation requirements may be lower.

You should check your core, if it was not interleaved laminations and they were only butted together, there is often a layer of paper about 2-3 thou thick to create a slight air gap and reduce core saturation.
Candle (paraffin) wax that is not coloured also works as an impregnant.

Ed

22nd Jun 2021, 9:17 pm	#14
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,195	Re: Winding a new output transformer for a Philips B5G64A Radio Hi, I think your figures should work just fine, interleaving will only improve matters and as Joe says the yellow polyester tape is great for insulation between windings. You can use grade 2 (double enamelled) wire for both pri and sec, but many winders simply use grade one on the output transformers where insulation requirements may be lower. You should check your core, if it was not interleaved laminations and they were only butted together, there is often a layer of paper about 2-3 thou thick to create a slight air gap and reduce core saturation. Candle (paraffin) wax that is not coloured also works as an impregnant. Ed