I'm just restoring an old radio that has one. I don't know if it works yet or if I'll need to find a replacement. This has been a goal for a while now - I've restored several old radios, this will be the first with a magic eye.
I also built an AM broadcast unit that uses vacuum tubes and a magic eye - it was a mash up of two different designs I found on the internet https://youtu.be/QIib5W-JCY8 On Monday, April 25, 2022 at 11:45:22 AM UTC-4 Robert G. Schaffrath wrote: > "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 <aishalo...@gmail.com> 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/e94b8a88-7fd1-4487-b214-0dbcf533ec5bn%40googlegroups.com.
