[neonixie-l] Re: tube machinery etc sale
On Feb 5, 10:48 pm, JohnK yend...@internode.on.net wrote: Saw this posted by Seth on TCA Group:- Aspen Pittman is selling off machine tools, and vacuum tube parts on eBay. These were from the Owensboro GE plant. They include grid forming machines, sealers, evacuation pumps, etc. Price (bidding) starts at $30K for all? Most of the NOS USA parts are for 6L6 and 6CA7 tubes. I suppose I could try forwarding the email to anyone interested. There is also a youtube video showing some of the equipment in use. It is not listed, so one will need to use a link to see it. The follow up on TCA at http://groups.yahoo.com/group/tubecollectorsassociation/message/29608 suggests that it is mostly junk. Maybe. Maybe not. Nick -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: tube machinery etc sale
Hmmm... I was aware of Groove Tubes and Aspen Pittman, but there is a lot of bad feeling out there: http://la-economy.blogspot.com/2011/11/aspen-pittman-groove-tubes-legacy.html etc. It seems that Groove Tube tubes were never made in the USA - they were Chinese, then selected and matched in the USA by a lengthy, largely manual, process. Nowadays, automated testers do a faster better job at half the price from a number of vendors. The kit that is for sale may not have been used for many many years (if it works at all). Caveat emptor! Nick -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] Re: tube machinery etc sale
On 6 Feb 2012, at 18:23, Nick wrote: Hmmm... I was aware of Groove Tubes and Aspen Pittman, but there is a lot of bad feeling out there: http://la-economy.blogspot.com/2011/11/aspen-pittman-groove-tubes- legacy.html etc. It seems that Groove Tube tubes were never made in the USA - they were Chinese, then selected and matched in the USA by a lengthy, largely manual, process. Nowadays, automated testers do a faster better job at half the price from a number of vendors. The kit that is for sale may not have been used for many many years (if it works at all). Caveat emptor! Nick My friends in the jukebox world are pulling out old sets of amp tubes all the time. I replaced a set of originals recently in my '59 stereo Wurlitzer and replaced them with new matched Sovtek Reflektor Electro- Harmonix tubes. I was advised to sell the old tubes to the guitar amp nuts who go crazy after the old originals, which of course must sound s much better than anything around these days. I don't suppose many of them have much understanding about the electrons in their amps. It's the Emperor's New Clothes. They care more about story appeal and coolness than anything else. As if to scold me for such impertinence, one of the new Electro- Harmonix tubes started to cook my jukebox. So I swapped the old bottles back in while I obtained a new matched set. I now have the new matched set but I cannot honestly tell any difference myself between the old tubes and the new tubes but the meticulous matching and changing of all the other component, caps and resistors and impedance matching the cartridge has made a huge difference. John S -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Nixie clock with vacuum tubes
I was wondering if anyone ever attempted to design a nixie clock that is completely made up with tubes? I did a rough estimation and I came to about 30 ECC83 tubes to make a (24) hour and minutes display. That sounds like a realistic number, so perhaps someone has designed that already. Michel -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] Nixie clock with vacuum tubes
I've seen several on the net, this is still my favorite: http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digital-Roehrenuhr.htm -Adam On 2/6/2012 3:08 PM, Cobra007 wrote: I was wondering if anyone ever attempted to design a nixie clock that is completely made up with tubes? I did a rough estimation and I came to about 30 ECC83 tubes to make a (24) hour and minutes display. That sounds like a realistic number, so perhaps someone has designed that already. Michel -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: Nixie clock with vacuum tubes
WOW that is totally cool! It looks even better than what I would have expected! He said he's not running the clock all the time because of electricity bills :-) It looks like it consumes over 0.5kW!! Fantastic project, thanks for the link! Michel On Feb 7, 10:21 am, Adam Jacobs a...@jacobs.us wrote: I've seen several on the net, this is still my favorite:http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren... -Adam On 2/6/2012 3:08 PM, Cobra007 wrote: I was wondering if anyone ever attempted to design a nixie clock that is completely made up with tubes? I did a rough estimation and I came to about 30 ECC83 tubes to make a (24) hour and minutes display. That sounds like a realistic number, so perhaps someone has designed that already. Michel -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: Nixie clock with vacuum tubes
Scroll down to the third group of links, titled All Tube Nixie Clocks: http://threeneurons.wordpress.com/about/ Are you including power supply and timebase in your calculations ? Actually, the ECC83 (aka 12AX7) is not the best choice for logic. The ECC82 (12AU7) or ECC81 (12AT7) would be better choices. The 12AX7/ ECC83 can't pull enough current to really light up a nixie. When they actually used tubes in computers, the 5963 (a special version of the 12AU7/ECC82) was used, because it could go a long time in the 'cutoff' state, without damaging the tube. If you really want to lower you're tube count, use bi-quinary nixies. The B5025 ZM1030/ZM1032 are the only tubes made this way. They all have the same pinout, and us the miniature 9-pin base, so you can use the same socket type used for the ECC81. Using a bi-quinary lowers the tube count by about half. If you use binary counters and then decode, you only need a 1-of-5 and 1-of-3 decoders, instead of 1-of-10 and 1-of-6 decoders. If you ring counters, use a 5-stage with a binary flip-flop, instead of a 10- stage. Likewise for the 6-stage. Here's the datasheet for the ZM1030: http://frank.pocnet.net/sheets/045/z/ZM1030.pdf As you can see it has only 5 cathodes, but two anodes (odd even). So depending on which anode is powered, the display will be either 0,2,4,6,8 or 1,3,5,7,9. Biquinaries only have an advantage with discrete circuits. Once you start using ICs, and advantage is lost. If you don't believe me, 'pencil-whip' a circuit either way. -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] www.gstube.com - Real or ripoff ?
Has anyone ordered from www.gstube.com and actually received product? -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: Nixie clock with vacuum tubes
Quite a bit of interesting technology there, especially the clock that is only made with neon bulbs, who would have thought that? Certainly not me :-) I came up with this question as I have an old batch counter that uses discrete transistors for it's BCD counters and decoders. http://xiac.com/Images/KingNixieBatchCounter.jpg I was surprised to see so little transistors there. I actually simulated this circuit in multisim to see how it would actually work. Judging from that, I thought it wouldn't be too complicated to make a clock with tubes, you just need a lot of them. Obviously, I didn't take any of the other aspects into consideration, like power supply and time base etc, it was just a rough idea. Your ZM1030 riddle has probably something to do with the amount of transistors required to go quickly from a BCD counter to a digit on the tube. Michel On Feb 7, 1:28 pm, threeneurons threeneur...@yahoo.com wrote: Scroll down to the third group of links, titled All Tube Nixie Clocks: http://threeneurons.wordpress.com/about/ Are you including power supply and timebase in your calculations ? Actually, the ECC83 (aka 12AX7) is not the best choice for logic. The ECC82 (12AU7) or ECC81 (12AT7) would be better choices. The 12AX7/ ECC83 can't pull enough current to really light up a nixie. When they actually used tubes in computers, the 5963 (a special version of the 12AU7/ECC82) was used, because it could go a long time in the 'cutoff' state, without damaging the tube. If you really want to lower you're tube count, use bi-quinary nixies. The B5025 ZM1030/ZM1032 are the only tubes made this way. They all have the same pinout, and us the miniature 9-pin base, so you can use the same socket type used for the ECC81. Using a bi-quinary lowers the tube count by about half. If you use binary counters and then decode, you only need a 1-of-5 and 1-of-3 decoders, instead of 1-of-10 and 1-of-6 decoders. If you ring counters, use a 5-stage with a binary flip-flop, instead of a 10- stage. Likewise for the 6-stage. Here's the datasheet for the ZM1030: http://frank.pocnet.net/sheets/045/z/ZM1030.pdf As you can see it has only 5 cathodes, but two anodes (odd even). So depending on which anode is powered, the display will be either 0,2,4,6,8 or 1,3,5,7,9. Biquinaries only have an advantage with discrete circuits. Once you start using ICs, and advantage is lost. If you don't believe me, 'pencil-whip' a circuit either way. -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] www.gstube.com - Real or ripoff ?
Has anyone ordered from www.gstube.com and actually received product? In short, yeah, I've bought a tube from them, and received it. In detail, if you're curious: Yeah, I requested an AMH-10 and another tube from them back in April. They were out of the other tube, and quoted me a price for the AMH-10, and wanted to be paid by Western Union, bank transfer, or Moneybookers, with a surcharge for WU or Moneybookers. The weirdness with payment left me nonplussed, but admitting they didn't have the other tube in stock wasn't the sort of thing a scammer would do. So I went ahead with it. Then they said I had to send the money to Anton's wife, Tatyana Bodunova-Skvortsova, but there was surcharge for WU. This still seemed a little sketchy, but I went ahead with it, as I wanted that tube, and there were some other tubes I was thinking of ordering if things went well. After a reasonable shipping amount of time, the tube showed up, packed reasonably well in wadded-up newspaper in a cardboard box of sufficient size. - John KG4L -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] Re: Nixie clock with vacuum tubes
I came up with this question as I have an old batch counter that uses discrete transistors for it's BCD counters and decoders. http://xiac.com/Images/KingNixieBatchCounter.jpg I was surprised to see so little transistors there. The BCD boards look to have 8 transistors arranged as four flip-flops. This makes the decoders easy, as the flipflops have Q and not-Q outputs for each stage, so a simple wire-and lashup with some diodes will do the trick. Cute construction with the long narrow board perpendicular to the other board, with the nixie on it. I actually simulated this circuit in multisim to see how it would actually work. If you can extract a schematic from that, I'd be curious. Judging from that, I thought it wouldn't be too complicated to make a clock with tubes, you just need a lot of them. Almost any dual triode can be made into a flip-flop, so your 8 transistors can fit into 4 bottles. Even a 7-pin 6J6 can work, since flip-flops generally have common cathodes anyway. Your ZM1030 riddle has probably something to do with the amount of transistors required to go quickly from a BCD counter to a digit on the tube. Yeah, if you look at Bruegmann's writeup, he points out that he's using even/odd decoding. Even 7441 and 74141 chips do the same thing internally. Biquinary nixies are a natural, and as Mike points out, if you use 9-pin miniature tubes, you can use the same sockets for everything, nixies and all. - John -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] www.gstube.com - Real or ripoff ?
I am interested in this seller too. There are two Russian sites that look extremely similar and one of them has a weirdo CRT that I would like. I held off ordering because they would only accept direct cash via a service I have not used or know about OR via Western Union. I feel much happier buying via PayPal [and sometimes credit card because of the International Protection (chargeback)]. John K. Australia - Original Message - From: Dave ukewarr...@yahoo.com To: neonixie-l neonixie-l@googlegroups.com Sent: Tuesday, February 07, 2012 1:04 PM Subject: [neonixie-l] www.gstube.com - Real or ripoff ? Has anyone ordered from www.gstube.com and actually received product? -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] www.gstube.com - Real or ripoff ?
Ah, that is reassuring; I must check if Anton still has the CRT I want. Pity that stories of 'baddies' out there make us so wary of everyone ! John K - Original Message - From: John Rehwinkel jreh...@mac.com To: neonixie-l@googlegroups.com Sent: Tuesday, February 07, 2012 2:03 PM Subject: Re: [neonixie-l] www.gstube.com - Real or ripoff ? Has anyone ordered from www.gstube.com and actually received product? In short, yeah, I've bought a tube from them, and received it. ...clip... -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: Nixie clock with vacuum tubes
The BCD boards look to have 8 transistors arranged as four flip-flops. This makes the decoders easy, as the flipflops have Q and not-Q outputs for each stage, so a simple wire-and lashup with some diodes will do the trick. Cute construction with the long narrow board perpendicular to the other board, with the nixie on it. That is correct, I made a sub circuit called DIV2FFN. It's a very advanced flipflop with just 2 transistors! It supports pre-settable inputs, edge triggering, division by 2, very smart design! http://xiac.com/Images/DIV2FFNblock.JPG The circuit has 4 of these connected to each other as in this schematic: http://xiac.com/Images/BCD_CNT.JPG The counter counts F-E-D-C-B-4-3-2-1-0, which is most likely done to save some transistors in the decoder. Michel -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
[neonixie-l] Re: Nixie clock with vacuum tubes
Cobra007 wrote: Quite a bit of interesting technology there, especially the clock that is only made with neon bulbs, who would have thought that? Certainly not me :-) That sounds like something crazy that I would dowhen I got a few free thermometer counters. http://selectric.org/tubeclock/index.html I should try to get it working again, it hasn't been counting properly for years. Jim -- You received this message because you are subscribed to the Google Groups neonixie-l group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
