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I apologize in advance if this ends up being total bullsh*t 
I've been thinking about something. A normal transformer operating in best case scenario when powered on experiences magnetizing current plus the momentary short circuit load while the capacitors charge up, correct?
However, from what I've been reading, inrush can be compounded severely depending on whether or not it switches at the zero crossing point or if the incoming phase angle of the AC waveform opposes the angle of the remanent flux in the core. I've been thinking about a way to avoid switching on to these conditions.
What if we took a high hysteresis device, lets say, a glorified core memory which would be disconnected from the mains to give us our reference to the magnetized state of the transformer core. During power on, when the AC wave opposes the magnetized state of the "core memory" we can use the induced voltage in an inverting amplified circuit to trigger a relay during the optimal time.
Its just an simplified idea, but would this work?
I've been thinking about something. A normal transformer operating in best case scenario when powered on experiences magnetizing current plus the momentary short circuit load while the capacitors charge up, correct?
However, from what I've been reading, inrush can be compounded severely depending on whether or not it switches at the zero crossing point or if the incoming phase angle of the AC waveform opposes the angle of the remanent flux in the core. I've been thinking about a way to avoid switching on to these conditions.
What if we took a high hysteresis device, lets say, a glorified core memory which would be disconnected from the mains to give us our reference to the magnetized state of the transformer core. During power on, when the AC wave opposes the magnetized state of the "core memory" we can use the induced voltage in an inverting amplified circuit to trigger a relay during the optimal time.
Its just an simplified idea, but would this work?
What's old is new again, again.
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