"Magic Eye" tubes are some of my earliest memories of interesting displays when I was a child. My maternal grandparents had a Dumont TV (didn't everyone LOL?) that used a 6AL7 eye tube for tuning the built in AM receiver. My father had a Fisher AM/FM receiver (with add-on stereo MPX demodulator) that used a very rare 6GE12 eye tube with one side for AM and the other FM. Then of course there were more common round 6E5, 6U5 tubes I recall on some vintage receivers of various family members. By the time I was a teen in the 1970's, radio used tuning meters.
On Monday, April 25, 2022 at 3:13:24 AM UTC-4 Dekatron42 wrote: > You could mount the regulator & mosfet on the underside of the circuit > board and perhaps get more space for a heat sink there. Just bend the legs > upwards and use a spacer between the tab and the circuit board when > screwing it in place so you don't stress the tab and bend it. > > /Martin > > On Monday, 25 April 2022 at 02:57:59 UTC+2 Terry Bowman wrote: > >> >> On Apr 24, 2022, at 5:25 PM, Aisha Love <[email protected]> wrote: >> >> My interest started with Nixie tubes and expanded from there. I hope to >> one day have a large collection of unique vintage display devices. >> >> >> Magic eyes. Here are some really inexpensive boards that are a good >> starting point. They have a 12V jack, 3.5mm audio jack and a power switch >> out >> of the way in the back. This first one includes a Chinese EM84: >> >> https://www.ebay.com/itm/193443031569 >> >> >> The second is almost identical. It uses three different sockets for three >> different pinouts: EM80/81, EM800/EM84 or a Soviet 6E5S: >> >> https://www.ebay.com/itm/191011269169 >> >> >> The seller has all three sockets. I bought six boards and two sets of >> sockets. I also scored two or three each of the tubes listed above. The >> only caveat with these particular boards is that the 6V regulator and the >> power MOSFET don't have heatsinks and I haven't been able to find any small >> enough to fit (there's almost no room). The first board has an LM317 and it >> gets hotter than the LM7806. >> >> The 6E5S really heats things up. My eternal thanks to anyone who can find >> an affordable TO-220 heatsink that's barely larger than the horizontal TTR >> itself. >> >> >> My apologies if I've already talked about this before. I'm very happy >> with what I ended up with and like to share. 8D >> >> I really do need to post this info to my blog but I haven't had time to >> take pictures and shoot video. Sound familiar? >> >> >> Terry Bowman, KA4HJH >> "The Mac Doctor" >> >> "If only you could see what I've seen with your eyes."—Roy Batty, *Blade >> Runner* >> >> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9a2aefc5-4a23-4b9b-bfe3-7f1f18d91b18n%40googlegroups.com.
