[sdiy] question on JFETS in vco of MS series

[Dave Manley]

On 8/27/2011 11:24 AM, Ian Fritz wrote:
> At 10:40 AM 8/27/2011, Dave Manley wrote:
>
>
>> http://en.wikipedia.org/wiki/Cascode
>
> Exactly. I believe in this case the purpose of the cascode is to eliminate the Early effect, which isn't emphasized in the wiki.
>
> This is one of the big advantages of the Terry Michaels design (EN#62, ENS-76, etc.); the expo source drives a virtual ground so there is no Early effect.
>

See also TAOE Fig 2.74b, 3.20