I'm missing something. How can I place a pad or via that connects to a filled plane? Everything I try is surrounded by the fill. I just need a ground pin on a...
Put your cursor over the pad you want to attach to the filled plain. Right click and choose top or bottom pad shape. Then select solid or the other. ... ...
You may also want to double check and make sure that the areas you are connecting to on the ground plane, are actually connected to ground, not cut off and...
Ahh..the good old days! Don't have any built up, but would be willing to help put a few together..if you have a list to work on. I'd expect there might be some...
In most cases, vacuum tubes are mounted in sockets on the board. Not much call for them these days. I wouldn't have a clue where you would buy one. Dennis....
... A quick search finds that tube sockets remain inexpensive and apparently plentiful . A gold-plated ceramic 7-pin PC mount tube socket costs <$3.00 at...
After thinking about my last post, I thought that perhaps tube sockets for PCBs might be available. Is this the case? It didn't occur to me at the time. If...
I know at least two places to look for tubes. Both are in the SF Bay Area, but they'll ship. San Mateo Electronics http://www.smelectronics.com/ HSC Electronic...
But the real question is; Why would anybody want one? They are electrically noisy, bulky, hot and take about 5 minutes to heat up with high voltage and x-ray...
Some people swear by the audio characteristics. Talk about a hot topic, I've seen a number of threads where people debate tubes vs. transistor/ic. Somewhat...
Hi, I have some library, I can send you a Zip file... ... De: expresspcb@yahoogroups.com [mailto:expresspcb@yahoogroups.com]Em nome de kb9r Enviada em:...
Please send to me also. Thanks!! ... ____________________________________________________________________________________ Looking for last minute shopping...
Ah yes, the Tube vs. Solid state debate. It creeps up often on boards such as this one. Yes, tubes are noisy, hot, energy hogs, temperamental, and dangerous....
Tubes have lots of uses! They can produce and amplify radio frequency signals, including microwave and X-ray, at levels not possible or practical using ...
I read a story where some guy took a transistor amp, added a filter to add second harmonic distortion (saturating transistor amps add third harmonics), and...
Dennis, It's not about size or noise. Tubes are fun. They are old, but that doesn't matter. X-Rays are not an issue unless you go beyond the manufacturer's...
... I agree tubes are nowhere near the problem an earlier poster implied, esp in the area of x-ray generation. As a general statement your typical tube not ...
I think you have forgotten about the 5 minutes it takes for one to get hot enough to actually work. What you are doing must be a kind of nostalga thing like...
... First it was x-rays, now more about 5-minute warm-up times. It's all just FUD*. Small tubes of the type one might mount on a PCB take under 15 seconds...
Ironically, my brand new LCD HDTV set takes longer to come on than an old, all-tube TV used to. Chuck WB2EDV ... From: "Jim Higgins KB3PU" <HigginsJ@...>...
Well, if you want to use tubes, then more power to you. Actually, lots more power. I can't imagine a place where tubes would outperform solid state except in...
All-tube TV's didn't have High Definition Digital mpeg video processors that needed to be booted up and synchronized to the transport stream. If they did, it...
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