Re: LF: A different inductor heating question

[Chris Wilson <dead.fets@gmail.com>]

Hello N1BUG,


The core, being dust iron, must have good heat transfer, so i would
expect the whole core would heat to much the same temperature, even if
the wire itself was the source of the heat. Can you lift the core on
longer extension leads of the same wire and see if the extensions heat
up?

Friday, March 9, 2018, 1:29:48 PM, you wrote:

> Thanks Chris,

> I think the wire NOT wound on the toroid is warming also, but it is 
> difficult to know. The leads are very short and soldered to large 
> pads on the circuit board which tend to act as a heat sink. I don't 
> have a thermocouple and I can only just get the tip of a finger onto 
> those short leads.

> Barring someone explaining otherwise, my assumption remains that 
> core heating must heat the whole core, including any portion which 
> does not have windings around it. But, I've been wrong before... ;-)

> Paul




-- 
Best regards,
 Chris                            mailto:dead.fets@gmail.com