[Henry] Filament Transformers

Michael Melland, W9WIS [email protected]
Fri, 12 Dec 2003 08:28:35 -0600


> I had a 2KD, as delivered there is no step-start and they power up with
> quite a pronounced THUNK!

Hi Bill,

No "thunk" here.... although I had an Astron RS-70M power supply that used
to make an impressive noise at turn on... as did my Centaur amp <grin>.

The Henry is silent except for the sound of the breaker on/off switch being
flipped.  Then after a few seconds the fan starts to wind up slowly...
sounds like a GE turbofan starting up.  At about 30% fan speed everything
suddenly springs to life quickly.

Mike