[sdiy] Ken Stone Tube VCA question

[Neil Johnson]

Hi,

cheater cheater <cheater00 at gmail.com> wrote: 
> Hi guys,
> I'm beginning my forays into the world of tubes.
> I'm looking at the schematic in:
> http://cgs.synth.net/tube/vca.html
> 
> What does the C3/R7 portion of the circuit do?

See here:

http://en.wikipedia.org/wiki/Discrete_Bipolar_Transistor_Biasing

In particular, the section "Voltage divider with AC bypass capacitor" about 3/4 of the way down.

Neil
--
http://www.njohnson.co.uk