Looks like Pload=3D0.001 x Vload x 10 x Iout=3DW(attage setpoint=3Dmaximum of 10) or Pload=3D100 x Wsetpoint, adjustable from 0 to 1000W, not Volts. So it's an adjustable constant wattage regulator 0-1000W at up to 300V. The zeners on the protection trip look they operate at the AD534 maximum input voltage. Looks they settled on that unusual bootstrapped saturated core self- oscillator to use the off-the-shelf Triad.
You can use an ordinary 50 watt toroid rated 120V to 6V at 50/60 Hz, and = run=20 it backwards at 600 Hz to get 1200V out with a 60 VAC input, at 500 = watts.=20 Most iron core transformers, especially toroids, can work up to at least =
1=20 kHz. I have used toroid transformers to drive a special three phase = motor=20 that I rewound from a single phase, using a VF motor controller. The = motor=20 was rewound with much heavier wire so it was still nominally 1/2 HP at =
60=20 Hz, 8 VAC, but I ran it up to about 240 Hz at which point it should be = able=20 to supply 2 HP. And I only needed about 15 turns on the toroids.
Actually, according to Always Wrong Missing Prong, aka Hellequin, = prefixes=20 are always capitalized, so that should read 300 MW. A bit inefficient, = but=20 does not violate the laws of physics.
I once built something like this to drive a halogen arc lamp, which = needed=20 constant wattage, but it never quite worked correctly, and the high = voltage=20 got to the AD534 multiplier IC and fried it..
I've never heard of a multiplying DAC that amplifies power. I've never heard of any electrical device that multiplies power. I'm more familiar with the type that has an efficiency value less than 1. That's what makes this device so wonderful!
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