Electronics > Projects, Designs, and Technical Stuff
Running inductor very hot: DT (°C) = 120
Miyuki:
Hi folks
Have you using high temperature magnetic ?
Im doing some math for my electronic load project, and as it is load some losses are even welcomed
I want to use choke with calculated worst case DT = 120°C
It is still in safe region by datasheet as booth core and wire used is CLASS 200 so even if use Tamb 55°C have some safety margin
Most of loss is in copper and I dont want to add more gauge or strands as it is already relative big and expensive coil
And at moderate loads are DT around 50°C so totally normal
strawberry:
High temperatures are not for reliability , capacitors, PCB, solder joints.. wont benefit being near this inductor
I had repaired burned off inductors, if some component in circuit run out of specs/age
schmitt trigger:
As strawberry has mentioned, the inductor itself may be safe, but its heat transferred to other components may cause some reliability issues.
What type of core are you using? Toroid? EE? PQ?
Depending on the geometry, perhaps you could add a heatsink to it.
Miyuki:
It is EE55 but most of losses are in copper not in core itself so heatsink wont help much
But I have no space limitation so can leave decent space around
james_s:
If you have no space limitation then why don't you use a larger inductor that can carry the current without getting scorching hot? IMHO if a component is getting over 100C then something is very wrong.
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