On Tuesday, November 4, 2003, at 01:46 AM, ka1xo@juno.com wrote:
Dear Morris,
The SB-220 should be modified so that it limits the inrush
current to the filaments.
**** The SB-220 has a current-limiting type filament transformer which
limits inrush-I to 60% of what Eimac allows. However, a stepstart is
still needed because the inrush-I to the HV-transformer will eventually
ruin the SB-220's ON/OFF rocker switch.
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|