I'm looking to finally add a tube power section to a pre-amp I built a while ago to make a complete amplifier. The catch is that it runs off a 48v 100W power supply. I can't really just rip-off designs at this voltage so I want to ask a couple questions, mainly concerning class A/B etc.
I'm probably going to use a couple of 6080 twin triodes, because of the HUUUUUGE current capability at low voltages, plus they're like 5 bucks. I want to run them in push-pull but in class A (and not A/B - I don't even come close to the dissipation limit to warrant this; or am I missing something here?) However I'm a little confused about how to actually determine the power output of a push-pull stage, and what class has to do with the actual power output.
I have a load-line attached, and am sort of wondering, since my bias point (blue dot) is clearly not in the centre of the load-line, it would go into grid current limiting earlier than cutoff. How does this affect the class of the amplifier and the power output? Would a different load-line or going class AB net me more output power (which is my main concern).
I know that when a tube is in cutoff it essentially changes the load that the other 'on' valve will see, but what happens when a tube is in grid current limiting? Any help would be appreciated
I'm probably going to use a couple of 6080 twin triodes, because of the HUUUUUGE current capability at low voltages, plus they're like 5 bucks. I want to run them in push-pull but in class A (and not A/B - I don't even come close to the dissipation limit to warrant this; or am I missing something here?) However I'm a little confused about how to actually determine the power output of a push-pull stage, and what class has to do with the actual power output.
I have a load-line attached, and am sort of wondering, since my bias point (blue dot) is clearly not in the centre of the load-line, it would go into grid current limiting earlier than cutoff. How does this affect the class of the amplifier and the power output? Would a different load-line or going class AB net me more output power (which is my main concern).
I know that when a tube is in cutoff it essentially changes the load that the other 'on' valve will see, but what happens when a tube is in grid current limiting? Any help would be appreciated
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