View Single Post
Old 31st Jan 2007, 8:46 pm   #2
Heatercathodeshort
Dekatron
 
Heatercathodeshort's Avatar
 
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
Default Re: Cracked LOPT Core

Hello Nigel,
If the transformer has not been dismantled I certainly would not worry about it. The crack will be a perfect fit and should not cause a problem.
The problem with all these very old flyback transformers is generally breakdown of the interleaving tissues that are wound on between the layers of windings. They were never designed to last for 50 years! The less you 'touch' it the better. I have discovered that large numbers of vintage flyback transformers suffer from 'core saturation' resulting in the width and eht reducing say after 30 minutes use. I intend to investigate this during the coming months. A possibility is deterioration of the core gapping paper tabs placed between the cores of early Ferroxcube designs. I don't think the crack will be the cause of your problem.
Regards John.
Heatercathodeshort is offline