Hello
standard pc power supply (tl494 control) output filter inductor what is the operating max. frequency ?
standard pc power supply (tl494 control) output filter inductor what is the operating max. frequency ?
An externally hosted image should be here but it was not working when we last tested it.
thanks @cjk2 yellow - white material
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Hello, this yellow-white core seems a
micrometals material -26 or some chinese "equivalents" usually found
in cheap atx power supplies.
Max operating frequency depends on the losses you can tolerate (temperature rise) an on the AC magnetic flux density swing.
First calculate your AC flux density swing and check on micrometals website a graph called core losses wrt. frequency and flux density for material -26 and check for core losses.
Material -26 has relatively high core losses compared to other iron powder cores and it is normally not suitable for operation above 50kHz more or less.
micrometals material -26 or some chinese "equivalents" usually found
in cheap atx power supplies.
Max operating frequency depends on the losses you can tolerate (temperature rise) an on the AC magnetic flux density swing.
First calculate your AC flux density swing and check on micrometals website a graph called core losses wrt. frequency and flux density for material -26 and check for core losses.
Material -26 has relatively high core losses compared to other iron powder cores and it is normally not suitable for operation above 50kHz more or less.
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