------------ ORIGINAL MESSAGE ------------(may be snipped)
On Mon, 28 Nov 2016 21:00:21 -0600, you wrote:
>Has anyone run the grid of an 8877 not connected to ground as far as DC is
>I really need to meter the grid current by bypassing the grid to ground with
>capacitors and several 10 ohm resistors in order to meter grid current.
>Metering grid current by the CT of the filament transformer, and the – of the
>power supply cant be done. Because the power supply – is directly grounded.
>Anyone had luck doing this?
You might consider un-grounding the power supply if you can. It's not
a safety issue - the difference between true ground and B- is a volt
or two at most. That allows you to use the conventional grid meter
between ground and B-. Trying to "ground" the grid with capacitors
can lead to unwanted resonances and instability as you probably know.
73, Bill W6WRT
Amps mailing list