The Magnetic Amplifier – A Lost Technology of the 1950s

Re:The Magnetic Amplifier – A Lost Technology of the 1950s by lpmay on Thursday June 18, 2020 @03:50AM (#23560792)

Down to DC? That should be a surprise, because it's certainly not true! Faraday's law of induction only applies to varying fields, which means AC or physical movement. Remember, it's perfectly normal and common to have a square wave with a DC component of zero!

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Re:The Magnetic Amplifier – A Lost Technology of the 1950s by cpcallen on Thursday June 18, 2020 @05:49AM (#23561507)

I think he means the response frequency, not the frequency of the AC drive (which he states was 10 kHz).

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Re:The Magnetic Amplifier – A Lost Technology of the 1950s by tonyarkles on Thursday June 18, 2020 @08:40AM (#23562512)

Yeah, they’re almost definitely referring to the control signal. Since it’s controlling the saturation of the core, it’ll happily go down to DC just fine.

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