Cathode follower driver

From a technical point of view, the cathode follower found in many guitar amps appears quite ordinary. It usually drives a tone stack, which would otherwise present quite a heavy load to a 'normal' gain stage and would result in considerable signal attenuation. Remember that, in a cathode-follower output stage, the grid must see much larger voltage swings than the cathode will undergo. This is a huge problem for the driver stage, particularly when it shares the same B+ voltage as the cathode-follower output stage.  · A cathode follower? Although it’s a classic tube-driven circuit, a cathode follower never featured in the smaller TubeMeister 18 amp – .

The cathode follower has very high input resistance, and low input capacitance because it does not suffer from the Miller effect. It also has low output resistance, so wide bandwidth can be maintained when driving heavy capacitive loads like long cable runs. A cathode follower? Although it’s a classic tube-driven circuit, a cathode follower never featured in the smaller TubeMeister 18 amp – but the TubeMeister Deluxe 20 changes all that. You will need to have a split supply for the driver, so the driver's cathode will feed the proper negative bias voltage to the output's grid. This makes for a powerful driver that is extremely fast; this will sound good. Using a cathode follower direct coupled to the power tube has many advantages but is harder to implement.

The grid to cathode voltage of the follower is usually about volts That's an interesting note about PIs and output drivers, as well. augmented cathode-follower circuits are described suitable for power-tube grid drivers, coaxial cable drivers, high-input impedance isolation stages. Here's an example of an amp with DC coupled cathode followers and voltages that make sense. Remember, the difference in voltage between the grid.