Home » Audio » Group Build » Resistor choices for SV811 project
Re: Resistor choices for SV811 project [message #31576 is a reply to message #31571] Wed, 07 December 2005 06:21 Go to previous messageGo to previous message
Damir is currently offline  Damir
Messages: 1005
Registered: May 2009
Illuminati (2nd Degree)
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.

 
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