mdroberts1243 wrote:Have you considered having the AC in and DC rectification/filtering for the relay supply on the same end as the HT supply? Then you can use the 5V winding on the transformer (if it has one) like the D'Lite Relays version without a long run of AC twisted pair to the other side of the amp.
I've been back and forth on this one. I'm starting to think you're right about the AC problem. I first thought that I could place the relay xformer at the other end, but then I'd need to run 110VAC all the way across.
After some of the comments I decided to do a more standard layout, tubes in a row.
There's one connection that I just can't find a route to the edge of the board, the Efx loop out exits by the relay. Otherwise I think I've got a decent layout.
If the layout is pretty consistent with other D designs, I wouldn't worry much about the EL, just use good quality, braided shield cable in and out. The signal is relatively high going into the PI.
ampdoc1 wrote:If the layout is pretty consistent with other D designs, I wouldn't worry much about the EL, just use good quality, braided shield cable in and out. The signal is relatively high going into the PI.
ampdoc
I agree about the loop. I can't say that I can evaluate the layout though, I'm not really a PCB kind of guy. Trying to learn.
I won't say I'm good at it, but I've designed a bunch for myself, and all worked as expected. I had a couple made ~ 3 years ago for a Trainwreck Express, which worked very well in some old Fender chassis, and didn't have any hum or noise problems.
I pretty much put all the components in the same places as a standard turret or eyelet board, then make the "easy" traces on the top layer, and the cross-traces on the bottom. Then I fill in the rest of both layers with a ground plane, and connect both sides of that with "through" holes.
I'll be glad to look at your board again when you get your layout decided.
ampdoc1 wrote:I won't say I'm good at it, but I've designed a bunch for myself, and all worked as expected.
That's more experience than I've had. I've worked on many PCB's but never designed one.
I pretty much put all the components in the same places as a standard turret or eyelet board, then make the "easy" traces on the top layer, and the cross-traces on the bottom. Then I fill in the rest of both layers with a ground plane, and connect both sides of that with "through" holes.
I'll be glad to look at your board again when you get your layout decided.
ampdoc
That's about what I did too. I moved some components around to get access to the components. The new layout is posted at the top of this thread.
