Re: The resonance research "monster" NST

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

"Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>

Indeed... that's why they are expensive (new.. not surplus)

400 Hz means you've got to have very thin laminations to cut eddy
current
losses
40 Hz means you've got to have a lot of core area.

No wonder everyone likes switching PSUs... power line, bridge rectifier,
capacitor, then the switcher running off the DC bus."

	After WW2 the surplus houses had a lot of 400 cycle transformers.  I
remember ads which said "conservatively rated for 400 cycles"!  I
suspect guys bit and had fun with dimmed lights and blown fuses.  Within
the past year I saw a similar ad for a 400 Hz variac.  Have a couple
here which are good for almost nothing except perhaps to regulate the
output of a LV filament transformer.

Ed