[sdiy] Ken Stone Tube VCA question

[cheater cheater]

Thanks Paul and Neil, this is some seriously useful info.

>Actually, JFET biasing is probably closer to what you are looking for.

I bet back in the day people would look at jfets and go, 'hey, read
this pentode manual, it'll explain everything'. Or something.

Funny how time reversed it :)

On Mon, Jan 12, 2009 at 12:46 PM, Neil Johnson
<neil.johnson97 at ntlworld.com> wrote:
> Hi,
>
> cheater cheater <cheater00 at gmail.com> wrote:
>> Thanks a lot for the reply Neil!
>>
>> OK.. now I know what C3 does. But I don't know what R7 does :)
>>
>> I've read the preceding section, but they are talking about some sort
>> of voltage divider there - I can't see that in the schematic.
>> C3+R7 look like some form of feedback, but I don't know between what
>> things, and I don't know what this feedback accomplishes?
>
> Actually, JFET biasing is probably closer to what you are looking for.
>
> Try here:
>
> http://www.rason.org/Projects/jfetamp/jfetamp.htm
>
> Neil
> --
>
>