Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: joesatch on July 12, 2022, 07:35:43 pm

Title: preamp cathodes to ground location
Post by: joesatch on July 12, 2022, 07:35:43 pm

let's say hypothetically you wanted to save space on the board (or your board was too small). could you run the resistors/caps to ground right next to V1/V2 on a terminal strip? let's say this individual still ran a ground lead to the proper location from the terminal strip. any drawbacks?

Title: Re: preamp cathodes to ground location
Post by: thetragichero on July 12, 2022, 09:58:37 pm

why wouldn't this work?
just make sure they go to the preamp ground node and not just some spot on chassis for best noise performance

Title: Re: preamp cathodes to ground location
Post by: dwinstonwood on July 13, 2022, 08:42:50 am

Here is a very useful grounding diagram that tubeswell posted in one of my threads.

I added the blue text showing how a tag strip could be used as a star-ground point, as long as the tag strip does not ground the wires to the chassis.

Title: Re: preamp cathodes to ground location
Post by: tubeswell on July 13, 2022, 04:45:49 pm

Replete with a few more hand-waving arrows