Re: NOT connecting the shield to ground!

Chris Hornbeck wrote

>"The cathode tends to "follow" the grid signal. To the extent that
> this is true, no voltage difference appears between them; hence,
> a high impedance. This is also called "bootstrapping".

Perhaps it is worth noting that the cathode will have a low output
resistance so the connection to the cable screen will not trouble
it.

If the voltage on one plate of a capacitor follows the other, then
there is no capacitance. Hence, as you say, high impedance.

Is the 36V a red herring? Is that a signal or a DC bias voltage?

cheers, Ian