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Re: Resistor choices for SV811 project [message #31576 is a reply to message #31571]

Wed, 07 December 2005 06:21

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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[Message index]

		Resistor choices for SV811 project By: colinhester on Tue, 06 December 2005 08:16
		Re: Resistor choices for SV811 project By: Damir on Tue, 06 December 2005 12:16
		Re: Resistor choices for SV811 project By: Norris Wilson on Tue, 06 December 2005 15:05
		Thanks By: colinhester on Wed, 07 December 2005 10:58
		Re: Resistor choices for SV811 project By: PakProtector on Tue, 06 December 2005 15:59
		Re: Resistor choices for SV811 project By: 2wo on Tue, 06 December 2005 16:21
		Re: Resistor choices for SV811 project By: Damir on Wed, 07 December 2005 06:21
		Warning, Will Robinson By: colinhester on Wed, 07 December 2005 11:01
		Damir is right as usual By: 2wo on Wed, 07 December 2005 22:06
		Bleeders By: colinhester on Wed, 07 December 2005 11:09

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