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Old 2nd December 2008, 07:47 AM   #11
dewets is offline dewets  South Africa
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Hi

I would not include the component overlay on the copperside of a valve/tube PCB.

With some of the voltages running on a valve/tube PCB you may just get an arc-over and wham!!!

But then I am over cautious and a nit picker about things that things that may go wizz-zap-wham and you smell that acrid stink of an electronic part "stepping-over" beyond it's design limits!

Great looking etched PCB there by the way. What tools process do you use to produce PCB's?
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Old 2nd December 2008, 01:08 PM   #12
cjkpkg is offline cjkpkg  United States
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I did the laser jet printout on a transparency. Iron it on and give it a Ferric Chloride bath...

I do plan to coat the solder side after it is stuffed...I have seen some folks recommend using just a clearcoat acrylic. Would this be OK??? Or maybe a clear polyurethane?

Any advice here would be appreciated.

Carl
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Old 8th December 2008, 01:33 PM   #13
cjkpkg is offline cjkpkg  United States
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I stuffed the pcb last night...Also on the copper side I ground away some areas that looked like they could arc over.

I am waiting on a couple items for the PSU - the B+ is too high right now so I am fine tuning it to get it down closer to 250V.

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Old 8th December 2008, 03:26 PM   #14
Cobra2 is offline Cobra2  Norway
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Are this (cap-end) connected?

Arne K
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Old 8th December 2008, 03:39 PM   #15
cjkpkg is offline cjkpkg  United States
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Quote:
Originally posted by Cobra2
Are this (cap-end) connected?

Arne K

Dang it!!! Nice catch...I hopefully would have caught it before I applied power but I missed it until now...I will have to run a jumper to it now...UGH...
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