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Re: Fixed Bias v. Cathode Bias [message #9068 is a reply to message #9067]

Sun, 17 July 2005 11:55

Manualblock
Messages: 4973
Registered: May 2009

Illuminati (13th Degree)

Thanks Wayne; It was the term "deep into class A" that I wasn't sure of. I am aware of operating class distinctions. What throws me is how we distinguish the borders of conduction limits that set the classification of operating points. Did that make sense?
I am trying to understand how the bias point of a tube dictates the resulting circuit parameters and how that impacts on the Z of the circuit. I am struggling with the way that these parameters affect the various AC impedance values and why that equals different effects on the loudspeaker.
I have a circuit built on PC boards that allows you to use fixed or cathode(self) bias. I need to know why I am making a choice of bias schemes. So I can choose wisely.

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[Message index]

		Fixed Bias v. Cathode Bias By: Manualblock on Sat, 16 July 2005 13:43
		Re: Fixed Bias v. Cathode Bias By: Forty2wo on Sat, 16 July 2005 19:46
		Re: Fixed Bias v. Cathode Bias By: Thermionic on Sat, 16 July 2005 21:25
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 09:16
		Re: Fixed Bias v. Cathode Bias By: Forty2wo on Sun, 17 July 2005 16:08
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 16:09
		Re: Fixed Bias v. Cathode Bias By: Forty2wo on Sun, 17 July 2005 16:27
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 17:48
		Re: Fixed Bias v. Cathode Bias By: Wayne Parham on Sun, 17 July 2005 18:44
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 20:01
		Re: Fixed Bias v. Cathode Bias By: Thermionic on Sun, 17 July 2005 20:52
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Mon, 18 July 2005 06:54
		Re: Fixed Bias v. Cathode Bias By: Thermionic on Mon, 18 July 2005 09:34
		Tube basics By: Forty2wo on Mon, 18 July 2005 11:51
		Re: Tube basics By: Manualblock on Mon, 18 July 2005 13:19
		Re: Fixed Bias v. Cathode Bias By: Wayne Parham on Mon, 18 July 2005 05:43
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 09:11
		Re: Fixed Bias v. Cathode Bias By: Wayne Parham on Sun, 17 July 2005 11:31
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 11:55
		Re: Fixed Bias v. Cathode Bias By: Forty2wo on Sun, 17 July 2005 15:14
		Re: Fixed Bias v. Cathode Bias By: Manualblock on Sun, 17 July 2005 16:08

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