colin
7443599054
like 53-xx, but with double the input cores, and a fixed 1:1 coupling. it achieves 0.9x amplification at best. - which is *better* than the 0.8 amplification we see with 53-xx when using 1:1 coupling, but not enough - what if we try this idea with 3:1 winding? we can do that if we sandwhich each output _between_ its associated input.