macrae11 wrote:
Also I've already chatted with you about it, but a little history to bring everyone else up to speed about what your goals are, what the design is based on etc. might be helpful.
Alain Benoit wrote:Can anyone tell me what the plate current would be if the load resistor was 220k the cathode resistor was 1k8 and B+ was 360V?
Alain Benoit wrote:Alain Benoit wrote:Can anyone tell me what the plate current would be if the load resistor was 220k the cathode resistor was 1k8 and B+ was 360V?
Anyone at all?
sean.boyer wrote:Hey man, glad I could encourage the use of KT's. A lot of people are too scared to use them, because they're so clean and awesome (and, well... rather pricey too).
sean.boyer wrote:One thing I would recommend, is NOT using the spare pins as tie points, just in case you decided down the road to try other tubes with different pin configurations in there. Maybe you won't want to, but maybe you will.
sean.boyer wrote:By the way, for your plate current calculation, is the cathode bypassed, and are we talking quiescent current?
Alain Benoit wrote:Can anyone tell me what the plate current would be if the load resistor was 220k the cathode resistor was 1k8 and B+ was 360V?
Alain Benoit wrote:Alain Benoit wrote:Can anyone tell me what the plate current would be if the load resistor was 220k the cathode resistor was 1k8 and B+ was 360V?
360 / (220k + 1.8k) = 1.6mA
Does everyone see that?
Alain Benoit wrote:The knob is simply a mechanical HUI to adapt an opposable digit type grip onto an otherwise difficult to manipulate .250" nickel plated shaft.
Alain Benoit wrote:Seriously though, the depth control will behave much like the resonance control on many current production amplifiers. Basically a VLF control.
Stay tuned to the latest post for further explanations.
macrae11 wrote:Question re: negative feedback loops. I know you said it can tighten up the response of the amp by increasing the damping factor, but does it also cause any phase issues?
macrae11 wrote:Also This may be a stupid question, but how does damping factor relate to slew rate? Do they affect each other at all? Is Slew rate even an issue in guitar amps, or modern amp design?
macrae11 wrote:
1. What do Cgk and Cgp stand for? Combined, they're the overall capacitance of the tube? Is this something that tube manufactures would reference for you, or do you have to test for it? Does it vary greatly from various tube types? Say 12ax7 to 12at7?
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