UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

1100 man · 31st Oct 2018, 9:51 am

Hi Dave,
Looking at the pictures, your overwind is very small and must use incredibly fine wire to achieve a resistance of 136 Ohms.

It might be best to start at a much lower current, 30ma or so and see what the temperature is like after half hour. It will take much less power to get your winding warm than my much larger one.

Just a thought!

Cheers
Nick

31st Oct 2018, 9:51 am	#135
1100 man Octode Join Date: Apr 2016 Location: Ventnor, Isle of Wight, & Great Dunmow, Essex, UK. Posts: 1,377	Re: Help needed restoring a Murphy V310 Hi Dave, Looking at the pictures, your overwind is very small and must use incredibly fine wire to achieve a resistance of 136 Ohms. It might be best to start at a much lower current, 30ma or so and see what the temperature is like after half hour. It will take much less power to get your winding warm than my much larger one. Just a thought! Cheers Nick