Forced cooling of toroid transformer
Anybody got any clue about how much more power a toroid transformer can deliver when installed with a fairly good airflow across it?
Mounted on a plate, ie only circumference and top is subjected to free airflow.
The primary will still heat up deep down in the transformer but heat loss by forced convection should improve quite a lot.
I have no idea about thermal conductivity internally from prim-sec-outside.
Forced air cooling can be very effective, but it depends greatly on the surface area and shape and air flow. This is why heat sinks are used. I don't think forced air cooling of a toroid is very practical, and I've never heard of it.
For long term reliability and good regulation I would not run a toroid for more than about 75% of its rated load. You are suggesting greater than 100% ?
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