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Just to show everyone how much of a beginner I really am:
- It says everywhere that in a pentode the screen voltage should never go above plate voltage. I suspect this is only true for steady-state, and that during operation the plate can and should fall below the (constant) screen voltage? That's kinda the point in having a screen in the first place, right?
- This one concerns grid 1 current, or put differently Class A1 / Class A2 operation.
I am slightly confused since preamp tubes like the ECC83 are only spec'd for negative g1 voltages, but power tubes also have characteristics for positive grid voltages. So blocking distortion only happens if you don't have enough drive for the gate, but if you can supply the gate current it is OK to have the gate swing positive?
- It says everywhere that in a pentode the screen voltage should never go above plate voltage. I suspect this is only true for steady-state, and that during operation the plate can and should fall below the (constant) screen voltage? That's kinda the point in having a screen in the first place, right?
- This one concerns grid 1 current, or put differently Class A1 / Class A2 operation.
I am slightly confused since preamp tubes like the ECC83 are only spec'd for negative g1 voltages, but power tubes also have characteristics for positive grid voltages. So blocking distortion only happens if you don't have enough drive for the gate, but if you can supply the gate current it is OK to have the gate swing positive?