- #71
jim hardy
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tim9000 said:So the maximum point of inductance would be something like at the top of the linear part, something like L = 0.8/3?
Ok, that's why we operate inductors below the knee, but can you remind me why we operate transformers just below the knee and not lower down, why is this getting the best 'value for money out of our steel'?
well 0,5 T looks like ~2.2 amps, 0.23 h
maximum inductance is down in the linear region where curve is steepest, remember it's flux per amp-turn...
So a transformer(or motor) with way more steel than it needs will operate cooler and draw less magnetizing current.
From a buyer's perspective that's what i'd want
but in the shoes of somebody who has to beat his competition's price, i couldn't afford to buy and ship that extra steel and the extra copper required to encircle that larger than necessary core. Unless i was selling to audiophiles...