Hi Don,
The grid dissipation of the 4CX10000D is 75W.
It takes 150W of drive for 250mA of grid current with that tube in class-c
with anode and screen voltage supplied.
Are you thinking of a different tube?
73
Peter
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of
donroden@hiwaay.net
Sent: Freitag, 15. März 2019 16:38
To: amps@contesting.com
Subject: [Amps] Question about grid current in 4CX or 3CX
Question :
For the larger tubes with handles ( commercial service )
Does grid current increase or decrease as plate voltage and screen
voltage is removed. ?
If it takes 250 watts to produce 100ma of grid current in a 4CX10,000.
is the grid just a big dummy load and is it doing the tube harm to
dump 250 watts into it when both plate and screen voltages are removed ?
Don W4DNR
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|