845 Tube Amplifier Schematic. Here the output characteristic of the tube 845 with the specific operation point click to enlarge you can calculate the output power with. The 845 vacuum tube have low amplification factor and it need high impedance transformers to get a good damping factor.
It is obvious that an input step up transformer 1 4 or 1 8 can resolve the voltage gain problem but in this case this amplifier should be driven by very low output impedance source near to 300 600ohm because the input capacity of the grid is multiplied two times for. The completed amp and power supply. Here the output characteristic of the tube 845 with the specific operation point click to enlarge you can calculate the output power with.
The only light in the room is the computer monitor with the blue windows background.
The 845 se is the evolution of the o2. Since it is not rated for 2000 volts it is placed in the ground leg of the power supply circuit. The 845 se is the evolution of the o2. The completed amp and power supply.
