I believe these vacuum tubes were used as resistors back in the old days. Is that correct? I want to buy this circuit to dismantle the vacuum tubes and use them in my project just for the visual display to show a burning glow that emits light. It would be great if these were integrated into a bigger design, such that the vacuum tube are serving their purpose. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230891058193&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en
that's exactly it - nostalgia. I want to bring back vacuum tubes to shows their 6-8 glowing points from the 70s. People would find this to be educational and fun!
QuoteWA6TKDWow, WA6 would rank to the age of classics. What are they up to now, WZ6?
Now are you free to mow my lawn?
Still to this day the majority of brand new commercial ham radio 2 kilowatt linear amplifiers still utilize vacuum tube finals rather then transistor finals
Why vacuum tube finals over transistor finals? What is meant by finals?
No doubt! Now that I know vacuum tube diodes are still being made, would it be difficult to wire up? How would I wire up the 8 pins?
QuoteWhy vacuum tube finals over transistor finals? What is meant by finals? Finals mean the active devices (transistors or tubes) used in the final stage of an amplifier circuit where the high voltage and current are used to generate the desired output power for the amplifier. There are of course high power transistors available to build a 2KW output transmitter, but they required massive heatsinking compared to modest fan cooling of comparable power tubes and because the transistors can't normally work at the very high voltages of tubes the solid state amps require high current flow construction which offsets some cost savings. New high power linear amplifiers are to this day still somewhat cheaper if made with tube finals Vs transistor finals.Lefty
Today is so very different and it is a great time to be alive. The discoveries I've seem are truly awesome and the future looks even more interesting... From an Old Geezer, who remembers...