Re: Williamsons transformer workings and ac anode resistance
Most people in the UK associate Williamson and ultra-linear. Though his first published amplifier was a triode-strapped design, and someone else invented ultra-linear. Still, the association is strong if erroneous. So I wrote to cover tetrode, triode and ultra-linear operation.
Valve manufacturers want to show their products in their best light, so datasheet entries normally cover the conditions giving the most impressive power and gain figures, so the data sheets for tetrodes showed them in fixed Vg2 mode for the largest power and gain figures. Back in the day, the beam/kinkless tetrode was seen as a massive improvement over those old triodes.... they were so 1920s!
Only later did some devices get data entries for other modes of use.
David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
|