Ed Stallman wrote:
>what voltage zener should I us for the GS35B triode in GG, using 4000 volts
>HV under load to get close to 100 mills bias? I don't remember were I read
>it now? but I think 100 mils idling current is what I need?
About 35V. There's a circuit on my site, at
http://www.ifwtech.co.uk/g3sek/boards/triode/an5-1.0.pdf
which is probably cheaper than a large zener and gives adjustable
regulation.
100mA idling is a bit on the low side; 150mA may give noticeably better
IMD performance (but even that was originally someone's guess).
--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)
Editor, 'The VHF/UHF DX Book'
http://www.ifwtech.co.uk/g3sek
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