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May 13th 14, 11:49 AM
posted to uk.radio.amateur,rec.radio.amateur.homebrew
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The Transformer
On 13/05/2014 11:33, Brian Morrison wrote:
On Tue, 13 May 2014 10:39:24 +0100 Kafkaesque wrote: It's the DC resistance that limits the primary current once the core is saturated, not the inductance. When the core is saturated the effective inductance is zero. Think about the B-H loop diagram for a transformer. Which is why it's the resistance which limits the current for the parts of each half-cycle during which the core is saturated. On the other hand, the resistance will rise (or even O/C) because the temperature will rise ... possibly quite rapidly :-) |
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