LF: 3C5 CORES

["g3kev" <g3kev@netscapeonline.co.uk>]

Hi Larry.

3C5 ferrite cores are manufactured by Ferroxcube and have a Uo of 3000.
The equivalent is Indiana General 05P.

This core material was used a lot in line output transformers in tube
televisions some years ago.

I hope this helps you because no one else that responded to your message
seems to know what they are.
If you need any further info let me know.

73 de Mal/G3KEV