The CD47 (or GR-414) is the largest nixie tube in the world, with a digit height of 135mm. It seems to have been used in weigh-stations, as there are symbol tubes of the same size with the symbols Kg and t .

2021年4月22日 · Sometime after I’d designed and built my one tube clock, I managed to get my hands on a Rodan CD47 nixie tube. Now one of the main points of my one tube nixie clock was that it allowed me to display tubes from my collection, rather than have them sit in boxes and drawers, but the CD47 presented a bit of a problem.

The CD47 (GR-414) is the largest tube in the world, with a digit height of 135mm. It was made by Rodan-Okaya of Japan. The GR-1 is one of the first nixie tubes made by Rodan-Okaya (the other being the larger GR-2). You can see that the lettering on the tube is spelled Rodin, which is typical of the earlier tubes.

I decided to build a CD47 Nixie Clock. I thought that it would be interesting for some Nixie enthusiasts to see the building process. So I statred this site, which I will update step by step. Step1: The Power Supply For the Power supply I made …

Here's a CD47 nixie clock showing a positive leap second (ok, this one is hard-wired but its exactly right once every few years): High-res images of brand new CD47: CD47 base . Return to LeapSecond.com home page.

CD47/GR-414 (NIB and used): Ufiring = 120-133 V Umaintaining = 143 - 155V (@ Ik = 25mA) So what we see: Both will work on my power supply wich has 160 to 180 V adjustable. If I would use a 250V supply, the losses would increase. So I will go right with 170 Volts. I can use it for my second and third CD47 clock. Downloads/Datasheets:

High brightness illumination in neon red color. Low cost and power requirement and all electronic design providing high speed operation. Long life and less mounting place Of any Other readout devices. Bigger size tubes are mechanically reinforced with metallic or plastic shield fitted on its …

Rodan Okaya CD47/GR-414 Numerical display tube Tube Nixie, affichage numérique Nixie-Röhre, Ziffern-Anzeige-Röhre. Manufactured by • Fabriqué par • Hergestellt von : Okaya Electric Industries Co., Ltd. Tokyo, Japan. They were used in large industrial scales (truck scales, for …

Recently I managed to acquire a Rodan CD47 tube, so I had to make a one-tube-clock for that too. The CD47 requires 25mA of current, which would be pushing the power supply on this clock, so I created yet another version that could meet that requirement and then some.

Nixie Tubes. These neon-filled numeric displays, also known as 'numicators', consist of an outer mesh anode, with ten cathodes (or 11/12 with decimal point/points) shaped to form numbers.