20-02-2016, 10:24 PM
Hi.
Interesting question. I use cathode followers in many circuits and in them find them very useful.
One thing I need to ask though, do you need to use a matching transformer in the particular application? Is the resultant low impedance from the cathode suitable.
Ideally the follower would be directly coupled from its grid to the preceding stages anode. If a transformer is required then I would suggest a resistor from cathode to deck and the transformer capacitive coupled to the valves cathode, to allow the valve to follow the anode volts without excess A-K current.
Interesting question. I use cathode followers in many circuits and in them find them very useful.
One thing I need to ask though, do you need to use a matching transformer in the particular application? Is the resultant low impedance from the cathode suitable.
Ideally the follower would be directly coupled from its grid to the preceding stages anode. If a transformer is required then I would suggest a resistor from cathode to deck and the transformer capacitive coupled to the valves cathode, to allow the valve to follow the anode volts without excess A-K current.
