Posted by Damir [ 213.202.109.173 ] on December 07, 2005 at 07:21:40:

In Reply to: Re: Resistor choices for SV811 project posted by 2wo on December 06, 2005 at 17:21:37:

Thanks to point out that "Kiwame" are not flamable, I don`t have experience with them.
Bleeder of 470k on 430V supply "pulls" less then 1 mA. But, it isn`t really necessary - potential divider 47k/10k (to "bias" 6EM7 heater to 75V above ground) pulls I=430/(47+10) = 7,5mA. And dissipation in upper, 47k resistor is about 2,7W - we must use a 5W resistor here, not 2W as on schematic.

Replies:

• Warning, Will Robinson - colinhester 12:01:23 12/07/05 (1)
  • Damir is right as usual - 2wo 23:06:55 12/07/05 (0)