[Amps] Screen voltage regulation

[DEHAYS Dominique]

>>> I am new on this reflector, so may be I am asking a question whitch
>>> has been discussed before.
>>> I am looking for a simple design for the regulation of a screen
>>> supply. I need 800V and about 50 mA. I will have to take care of some
>>> negative current, so the supply has to be able to do that or I will
>>> use a 100mA supply and allow 50 mA of current through a resistor to
>>> ground. My anode voltage is 5 KV, so I don't want to get the G2
>>> voltage from the anode voltage.

Ah , ah ,
these voltages are looking like you are building a QBL5-3500 amplifier... 
In mine , I am using a classical PSU , choke input with a bleeder , no 
regulation . I have always been greated for the excellent quality of my 
transmissions , friends ( and they remained) were able to listen EME 
stations 10Khz away from my 2m QRG , so no need for a regulator.
73's Dom/F6DRO