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Re: Fisher 500C-how hot is too hot? [message #9176 is a reply to message #9175]

Sun, 04 September 2005 17:59

Damir
Messages: 1005
Registered: May 2009

Illuminati (2nd Degree)

With OP - Ua=440V, Ug2=320V, Ug1=-20V, you can expect more then 100mA Ia+g2 current through each EL34. Much more then Pa max for EL34. For "resonable" bias of about Ia~50mA (and Ig2~5mA) you should change the "bias voltage" Ug1 to about -26V. If you don`t have adjustable "bias" pot, you can change the values of voltage divider resistors in "bias" supply to "enlarge" Ug1.

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[Message index]

		Fisher 500C-how hot is too hot? By: hurdy_gurdyman on Sun, 04 September 2005 07:22
		Re: Fisher 500C-how hot is too hot? By: Damir on Sun, 04 September 2005 17:59
		Re: Fisher 500C-how hot is too hot? By: hurdy_gurdyman on Sun, 04 September 2005 21:52
		Re: Fisher 500C-how hot is too hot? By: Damir on Mon, 05 September 2005 05:43
		Re: Fisher 500C-how hot is too hot? By: hurdy_gurdyman on Mon, 05 September 2005 09:45
		Re: Fisher 500C-how hot is too hot? By: Damir on Mon, 05 September 2005 11:32
		Re: Fisher 500C-how hot is too hot? By: metasonix on Mon, 05 September 2005 13:07
		Re: Fisher 500C-how hot is too hot? By: hurdy_gurdyman on Mon, 05 September 2005 15:32
		Re: Fisher 500C-how hot is too hot? By: hurdy_gurdyman on Tue, 06 September 2005 21:03
		oops By: hurdy_gurdyman on Tue, 06 September 2005 22:01
		Re: oops By: Russellc on Wed, 07 September 2005 11:23
		New day, more tinkering, new results By: hurdy_gurdyman on Wed, 07 September 2005 12:47
		Re: New day, more tinkering, new results By: Damir on Wed, 07 September 2005 13:23
		Re: New day, more tinkering, new results By: hurdy_gurdyman on Wed, 07 September 2005 14:42
		Hmm... By: Damir on Wed, 07 September 2005 23:46
		Re: Hmm... By: hurdy_gurdyman on Thu, 08 September 2005 07:20
		actually... By: hurdy_gurdyman on Thu, 08 September 2005 07:38
		Re: actually... By: hurdy_gurdyman on Thu, 08 September 2005 09:14
		that's power iron hot... By: Thrint on Mon, 05 September 2005 08:47
		Re: that's power iron hot... By: hurdy_gurdyman on Mon, 05 September 2005 09:38

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