[Milsurplus] GP and TBW keying

[Unserviceable but Repairable]

The big 'un about 800hz is weight and...

> a much smaller filter cap (1uF in TBW)

...too, Rob Flory

EE books (gasp, hold up silver crucifix) say saturation-rating core weight 
is close to a direct inverse proportion of frequency.  Eg. a 10#
800hz xfrmr'd need 140# at 60hz.  Give or take

Many* 2nd generation big computers used a rotary inverter to source their
myriad LV DC supplies.  There weren't any switchers in the 60s.

   Marty


*I didn't say 'all' because I'm sure there's a special case like the
 Russian Rostov-on-Don that outweighted a C&O Allegheny locomotive.