Re: [neonixie-l] IN-4 ghosting, once again.

2021-01-07 Thread Mateusz Dziuba
@Bill van Dijk It's 1x6 multiplexing actually. Posted schematic is not mine, I used it just as reference. It seems someone mixed tube connections as well. I tried adding resistors before, but without success. @gregebert I am not using PWM yet, but I am planning to do so, to make automatic dimm

Re: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Instrument Resources of America
The same was true about black and white crt's, all were round for quite some time. IIRC the first 21" round color crt was a 21AXP22?   Ira. On 1/7/2021 2:40 PM, 'orange_glow_fan' via neonixie-l wrote: When Color TV's first came on the market in the early 50's all of them had round CRT's. The f

Re: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Yohan Park
Ha ha ha, great story :) Well, it's al about how we take today's technology for granted and don't care if it breaks isn't it? I have a couple of "out of date" phones lying around and wouldn't feel bad if I blew them up some way. Just for fun. But 30 years from now people probably will look at it

Re: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread gregebert
After watching that video, I feel more guilt about how I loved to throw them into the local storm drain just so we could hear the BOOM ! The addiction got so bad that I would sometimes ride my bike to the local TV repair show, grab a tube from the dumpster, and ride home no-hands (yes, can you

RE: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Bill van Dijk
An electron cannon emits electrons in a very narrow straight beam, which is (was) than magnetically deflected by heavy electromagnets mounted on the neck of the tube. If you create a deflection circuitry with a deflection equal in all directions, you get a circle. Hence the round screen. In ord

Re: [neonixie-l] Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Adrian Pardini
Nice video. I have a couple of chart recorders like the ones used there while checking the metal strips. On Thu, 7 Jan 2021 at 09:40, Mike Harrison wrote: > > https://www.youtube.com/watch?v=7IrSLPVkxCo > > -- > You received this message because you are subscribed to the Google Groups > "neonixi

Re: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread 'orange_glow_fan' via neonixie-l
When Color TV's first came on the market in the early 50's all of them had round CRT's. The first ones were 15" CRT's. Around 1954 RCA introduced a 21" round CRT and they were the standard until around 1963 when the first rectangular CRTS entered the market. I suspect this film was made during

[neonixie-l] Getters: where are they?

2021-01-07 Thread Yohan Park
After watching the latest Fran Blanche video on YouTube https://www.youtube.com/watch?v=ybh1I8GIHmU I started thinking about this subject. Some Nixie tubes clearly have a getter while many don't (or at least not visible). What's up with this? Do lots of Nixie tubes have "hidden" getters inside? Da

Re: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Yohan Park
Yes you're right. At the end of the documentary at 19:15 you can see a man testing a TV with a round tube. On Thursday, January 7, 2021 at 10:19:16 PM UTC+1 Bill van Dijk wrote: > I believe the round tubes were for the cheaper TVs. > > > > > > *From:* neoni...@googlegroups.com [mailto:neon

RE: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Bill van Dijk
I believe the round tubes were for the cheaper TVs. From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of Yohan Park Sent: Thursday, January 07, 2021 3:50 PM To: neonixie-l Subject: [neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing Enj

[neonixie-l] Re: Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Yohan Park
Enjoyed watching that, thanks for sharing. Any idea what the large round tubes were used for back then? On Thursday, January 7, 2021 at 1:40:27 PM UTC+1 mikeselectricstuff wrote: > https://www.youtube.com/watch?v=7IrSLPVkxCo > -- You received this message because you are subscribed to the Googl

Re: [neonixie-l] IN-4 ghosting, once again.

2021-01-07 Thread gregebert
It looks like you are using PWM dimming. Can you disable it for now, and then focus on optimizing dead-time between cathodes and the anode timing. I'm fairly certain you want to turn OFF the anode before changing the cathode signals, allowing some dead-time, then turning on the next anode. I ca

Re: [neonixie-l] IN-4 ghosting, once again.

2021-01-07 Thread Mateusz Dziuba
I am multiplexing anodes one by one, from left to right. Frequency is around 40Hz per lamp. czwartek, 7 stycznia 2021 o 19:27:05 UTC+1 Mateusz Dziuba napisał(a): > I did not develop specific circuit diagram for my clock, but it is build > around this project: (please don't mind wrong polarity o

Re: [neonixie-l] Re: Nocrotec Blue Dream Nixie Transformer Nixtra-18.????

2021-01-07 Thread Yohan Park
Answered what? On Thursday, January 7, 2021 at 1:42:45 PM UTC+1 Nocrotec wrote: > Hi! > Answered. > Best regards > Dieter > > Am 05.01.2021 um 22:53 schrieb Paul Andrews: > > I think that only Dieter can answer that. > > > > On Tuesday, January 5, 2021 at 4:24:56 PM UTC-5 Tim Goldsmith wrote: >

Re: [neonixie-l] Re: Nocrotec Blue Dream Nixie Transformer Nixtra-18.????

2021-01-07 Thread Dieter Waechter
Hi! Answered. Best regards Dieter Am 05.01.2021 um 22:53 schrieb Paul Andrews: I think that only Dieter can answer that. On Tuesday, January 5, 2021 at 4:24:56 PM UTC-5 Tim Goldsmith wrote: Hi  Recently unpacked my IN-18 Blue Dream Nixie Clock with the belly to assemble it (after

[neonixie-l] Fascinating film about 1960s colour CRT manufacturing

2021-01-07 Thread Mike Harrison
https://www.youtube.com/watch?v=7IrSLPVkxCo -- 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

[neonixie-l] Any information on the "Atlas Secondo" nixie-clock from 1972?

2021-01-07 Thread astroschmidt
I recently found some pictures of an Italian (?) nixie-clock from 1972 in a beautiful space-age seventies style design: www.nixieclocks.de/english/01fd1195970e86f01/o000.html [image: Atlas Secondo.jpg] The webpage with the photos is from Claus Urbach who is a German seller of nixie-kits (and I