stout relay circuit

[scole]

what does the relay circuit do? can it be left out?

[topbrent]

The relay switches the extra gain stage in and out.

Here is the hardwired, gainstage always on version:

http://www.el34world.com/projects/images/Stout.gif


Here is the switchable gainstage version:

http://www.el34world.com/projects/images/18WATT_VOLTAGES.gif

[topbrent]

Here are the schematics to compare if you prefer.
There wasn't a schematic for the no-switch version, so I edited out the relay circuitry.

[scole]

can you make a master vol version of the stout?

[scole]

why do we need the relay? cant we just put a direct switch? is it for safety? to keep high voltage away from the control panel?

[kagliostro]

more short are the wires less is the way to get noise

that can be a good reason

Kagliostro

[sluckey]

The relay makes it very easy to switch remotely via a footswitch.

[scole]

ok so you dont really need the relay, you can just put a regular switch in?

[sluckey]

yes

[scole]

does the stout with no switch have any clean or is it all gain?