[Amps] 4-250B or QB3.5/750 in GG operation

[2]

>Hello group,
>
>One other question on the 4-250B or qb3.5/750 in GG configuration.
>When using aprox. 2.7 Kv I'm building an amp with two of those tubes 
>parallel. Now i'm looking for the value of the bias zener to get them to
>run in class AB.
>
** For tetrode linear amplifiers, grid bias is usually obtained from a 
low-current adjustable power supply.  Example on Figure 4 on my Web site.

>Any sugestions?
>
>regards,
>
>erwin 
>pe2six
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-  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, 
www.vcnet.com/measures.  
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