[Amps] QBL5-3500 VG2 regulation

[rm1]

see 
http://www.somis.org/D.a.08.GIF

>Hello !
>Do someone has a good schematic to provide a stabilized VG2 (with
>protection) for a QBL5-3500 tethrode amplifier?
>The voltage is +800V and IG2 will be no more than 100mA.
>73 de Fabio, IT9GSF.
>
>P.S.: I remember I have found a complete schematic of a QBL5-3500 amplifier
>in the internet but now it is not accessible.
>
***  Grid-driven AB1 amplifiers are very similar.  see
http://www.somis.org/D.a.05.GIF


ciao, Fabio