I have been reading a lot about different sorts of tube amplifiers the last couple of weeks in an effort to gain enough knowledge to design my own at some point.
The Torpedo 3 topology i found particularly interesting compared to a lot of other designs. I am however at a bit of a loss when it comes to the CCS's. I have an idea that the output CCS might be a cascode depletion-mode MOSFET design, as described by Walt Jung in the Audioexpress article, but i'm not sure.
Does anyone know the exact circuit of both the output CCS and the tube CCS?
The Torpedo 3 topology i found particularly interesting compared to a lot of other designs. I am however at a bit of a loss when it comes to the CCS's. I have an idea that the output CCS might be a cascode depletion-mode MOSFET design, as described by Walt Jung in the Audioexpress article, but i'm not sure.
Does anyone know the exact circuit of both the output CCS and the tube CCS?