heater ct

[trem]

I looked in Merlin's book and Jack Darr also.
It is probably there somewhere, but i cannot find it.
When the 6.3 VAC winding has a CT, and that is connected to ground, there is no current through that CT.....right.?
So should it be OK to connect the B+ filter cap grounds to that Heater CT also.?
That is to say... I can ground the Heater CT and the filter caps to the same spot on the chassis.?
Thank You

[catalin gramada]

Yes you can but is a good practice to avoid noisy spot ground with big traffic currents return. You don't need to tie heater ct to a decoupling node. just choose a clean ground spot. avoid also the transformers bolts. If you choose to tie all decoupling nodes to a star you can also tie the ct heaters there but also can try to tie in a different point of the chassis for minimal noise. It is very easy to walk inside with a aligator clip in the end of ct and listen to the hum level