Questions tagged [nixie]

Nixie tubes are cold cathode gas discharge tubes with multiple elements. Elements are typically in the shape of numbers from 0=9, or mathematical symbols. Elements glow orange when high voltage is applied between the anode and one of the cathodes.

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50 views

Fuzzy digits when driving with TPIC6B595

I designed a schematic and PCB of a simple Nixie clock and I hope that someone will be able to explain what's happening. The problem is that when I'm driving the cathodes with TPIC6B595 shift ...
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1answer
62 views

Ghosting on Nixie Tube Clock

I have problem with my nixie clock. There are ghosts when changing numbers on the lamps. I'm using multiplexing with TLP627 opto-coupler to control anodes and NPN MMBTA42 bipolar transistors to ...
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1answer
103 views

Do small 1:1 isolation transformers exist?

I am building a Nixie clock that will be powered from 110V wall power. The design is based around having this 110Vac as the input voltage, but I wanted to put an isolation transformer inline for ...
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1answer
52 views

Can I use the main power battery as a RTC battery as well?

Im currently thinking of a Nixie-Watch. Because I have almost no space on my PCB, I would like to use the 3.3v battery which powers the whole system also as the RTC Battery. I could connect a 3.3v ...
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224 views

Nixie Tube driver ICs keep dying

I really need a hand here. I am trying to control an IN-19B nixie tube with an Arduino UNO. I am using a 170v power supply with a 20K resistor on the anode and the k155id1 driver IC. I have got things ...
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75 views

Boost converter ringing

I'm working on a Nixie clock based on a STM microcontroller. It consists of two boards: one includes the microcontroller and a boost converter and the other includes the tubes and two HV5530 high ...
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1answer
65 views

Voltage clamping for nixie tube driver

I want to design a nixie clock based on a high voltage shift register: the HV5530. I don't what to multiplex the tubes to avoid loss in brightness. My idea is to leave the anodes powered all the time ...
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115 views

Power Supply Nixie tubes (IN 9)

I am in big trouble with my power supply for Nixie tubes (IN 9 bargraph.) I need 140V -160V (150V prefered) output voltage and 10x 12mA --> ~140mA current. (~ 21W). I tried to design boost ...
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1answer
149 views

Drive Nixie tube with BJT

I'm trying to replicate the Nixie clock designed by Kevin Lee (https://0x7d.com/2017/nixie-tube-clock/). It uses a NXP PCA9685 PWM controller and a MSD42WT1G BJT to drive each tube cathode separately. ...
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Help identify the IC manufacturer: is it really possible that these ICs from the 60's just made a comeback (К155ИД1)?

So we've been manufacturing Nixie Clock kits for the last few years, and for the multiplexers we used 74141 ICs, or their Soviet clones (К155ИД1). The latter were easier to find on ebay and were used ...
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43 views

Not All I/O Pins Work for Nixie Driver on Arduino MEGA and ATMEGA1284PU

I am tearing my hair out, and help would be immensely appreciated. I am developing a nixie RPN calculator. I am using nixies being driven by K155ID1 nixie drivers, connected to an ATMEGA1284PU. I ...
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369 views

What determines Nixie tube digit stack order?

I recently watched a video of Nixie tubes being built and another user had asked what determines the stack order of the digits in front of the anode. I searched around trying to find the answer but I ...
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1answer
154 views

Anode scanning Nixie circuit

I'm looking into driving nixies and i came across this multiplexing circuit I am a little bit confused about the chosen voltages. The 200v line I would assume is to meet the required strike voltage, ...
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2answers
1k views

Alternatives to High Wattage Resistors? (Do multiple low-wattage resistors equal a single higher wattage resistor?)

I am a beginner, so I may have made a horrible mistake in my diagram, but I am trying to learn. According as I have figured it, I am having an issue wherein I need a resistor rated for a minimum of ...
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1answer
84 views

Damaging BCD-to-decimal decoders?

(ACTUAL QUESTION IS AT THE BOTTOM) I am a beginner in electronics and am learning more day-by-day to my best. I first got interested in Nixie tubes a few years back, so those are what I play around ...
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155 views

What is the use of these capacitors in this circuit?

I'm pretty new to electronics, and while exploring the web I came across this circuit for a 180v Nixie tube power supply. http://www.electronics-lab.com/project/hv-nixie-dc-dc-switching-power-supply/ (...
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3answers
540 views

mc34063 boost converter - low performance and noise on avr interrupt

I have some problem with my nixie project. 1 - my mc34063 boost converter have poor performance. While i use active pull down D3 and Q2 for driving my mosfet then its enough for only one nixie tube (...
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2answers
370 views

Can you place two boost converters in series to boost 3v to 180v?

I am looking to build a power supply for a NIXIE tube. They need to output 180v at 4ma but will run off of a 3v lithium battery. The battery can take the current requirements for the input, but at the ...
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199 views

numitron tube IV-6

I have a IV-6 numitron tube, and it requires 25V over each segment. The segments have a common cathode. I thought of putting a BJT transistor, with numitron in collector, until I realized that cathode ...
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3answers
118 views

Driving a filament

I have a filament that needs 1V, and is rated at 50mA at 1V. I would like to use 5V supply for it, and I am wondering, how to approach this. 50mA at 1V means that the resistance is 2k, as per Ohm's ...
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3k views

What is a modern SN74141 alternative? [closed]

I'm making a Nixie Clock and I had to buy from ebay some old SN74141 (KM155ID1 equivalent). Is there some newer IC which does the same things as this one, or similar, that I could get from big ...
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2answers
480 views

MAX6966 a suitable sink driver for nixie tubes?

I recieved some IN-14 nixie tubes for Christmas, and was hoping to implement them in a project i have been considering for some time. The details are unimportant, except that each nixie tube should ...
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1answer
212 views

How to design the footprint when the pin positions are slightly different for each part?

I'm a beginner of electronics. I have several IN-12A nixie tubes. I want to mount the nixie tube on the PCB. However, the position of the pin in the datasheet is out of the position of the pin in the ...
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350 views

Why is this IC ok for high voltage?

I've used some SN74141 BCD-TO-DEC/DRIVER I had laying around to drive some nixie tubes recently, and I have also seen someone on the internet use HV5622 High Voltage Shift Register. I looked at both ...
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1answer
2k views

Is this circuit OK for a Nixie Tube clock? [closed]

I am designing a Nixie Tube Clock circuit for some IN12-A nixie tubes. My circuit is a modified version of the one found here http://www.instructables.com/id/SMD-Nixie-Clock/ . You can find my version ...
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2answers
375 views

What is the benefit of driving the HV5622 chip to the recommended operating voltage?

I am a beginner in electronics. I want to use HV5622 serial-to-parallel converter to drive nixie tubes. However, there are two types of datasheets: Recommended condition and absolute maximum ratings. ...
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3answers
2k views

How to drive four nixie tubes with arduino?(in-14/clock)

I'm looking to build a nixie clock. I have looked online, I found some guides but many used expensive nixie clock kits or custom pcbs. I came across some threads about driving a single nixie tube with ...
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395 views

When using the K155ID1 IC, some numbers of Nixie tubes do not emit properly

I'm beginner of electronics. (Please understand that I have used Google Translator.) I connected the IN-14 Nixie tube to the K155ID1 IC. But the numbers in the Nixie tube do not completely emit. When ...
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2answers
2k views

Is it bad to turn off IC by connecting its Vcc to ground?

I am using NTE74141 chips to connect the cathodes of nixie tubes to ground. To spare some Arduino pins (which I connect to the inputs of these ICs) I would like to multiplex the tubes. One idea was to ...
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1answer
792 views

When driving a Nixie tube with the HV5622 shift register, how hot will the chip get?

I am a beginner in electronics. I am trying to drive the IN-12A Nixie Tube using the HV5622 Shift register. I am trying to calculate the temperature of the HV5622 during normal operation. For each ...
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3answers
985 views

High voltage power supply for nixie-tubes

I want to design a power supply for 8 IN-14 nixie tubes. The tubes are controlled by a raspberry pi which needs a 5V supply voltage. I found this nixie power supply kit which converts 9V to about 180V....
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4answers
2k views

Anode driver for Nixie clock

I'm working on my first nixie clock which will be running with Arduino, using a 74141 nixie driver for the cathodes (common for 6 tubes) and multiplexing the anodes. I am using a MPSA42 NPN ...
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2answers
979 views

Ripple Current in Boost Converter for Nixies

I'm trying to design a power supply for 6 IN-8 Nixie Tubes (driven individually, not multiplexed). Each tube has a current draw of 2.5-4.5mA, so they pull around 30mA(max) total. The input voltages is ...
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212 views

Rectifying diode for boost converter in nixie clock

I've been working on this schematic to create a nixie clock. But I don't understand the need for recifying diode D5 in the schematic. Wouldn't a standard diode work? Does it have to do with the "back ...
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1answer
450 views

IN-12B Nixie Comma Current Limit

I'm looking into using a set of IN-12B Nixie tubes in a clock design I've been working on. If I tie my anode to the 170V striking voltage and use ~16kOhm to limit the digit current to 2.5mA then we'...
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2k views

Do low voltage “Nixie tubes” exist?

I want to make a small clock using Nixie tubes (for the cool/retro/steampunk look of them), I have some basic knowledge of electronics, but I have never done anything with more than 12V DC and ~10A. I ...
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2answers
407 views

Nixie Clock Power Supply

I've been working through this schematic for a Nixie Clock and I'm having a hard time understanding how the power supply (for the nixie tubes, not the digital logic) works. Afaik, the power supply is ...
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1answer
144 views

IV-9 Numitron Clock Flickering Issues

Complete electronics novice here - any information at all is appreciated. I'm attempting to rig up a numitron clock. I've used: 4 x IV-9 Numitron tube 4 x TPIC6B595N shift register (chosen based on ...
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5answers
2k views

What are some ways to improve a voltage multiplier?

I am working on a Nixie power supply, but I would like to improve it. I have 4x9V batteries in series for a total of 36V to be switched across a multiplier. A (TTL) 555 timer is running astable from ...
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91 views

Glitch on 7490 driving a 7441

Edit 1/1/17: I was going to take a picture of my NI Elvis breadboard as the first fee suggestions didnt work. I removed several ICs (counters) that I was going to use for the other digits and some ...
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3answers
543 views

Generate Short negative pulse from an open collector output?

Ive been teaching myself as I go so please forgive me for any errors. I need the output of an open collector output (goes to ground when active) to henerate a short negative pulse to reset the counter ...
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2answers
2k views

Nixie tube multiplexer circuit problem

I am working on a nixie tube clock design using IN8 tubes and a combination of MPSA42 and MPSA92 transistors to implement a multiplexed design of four tubes. The issue I'm running into now is that ...
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1answer
206 views

Using a current mirroring source to power 6 Nixie-Tubes

I would like to drive 6 Nixie-Tubes from a standard USB-Port (500mA / 2.5W), which is somehow hard to do because \$ 190 \text V \cdot 3 \text{mA} \cdot 6 = 3.5 \text W\$. If I could reduce the source ...
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2answers
206 views

Nixie tube equivalent circuit model and transients

I am about to design a Nixie clock and at the moment, I am doing some research. However my doubt is how to treat Nixie tube. For example, a simple circuit for switching Nixie on and off with: anode ...
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3answers
2k views

Reducing the brightness of Nixie tubes

I have a Nixie tube clock based on IN-12. I assembled the kit, it works great and it was great fun. But the tubes are just too bright in dark conditions. I would like to modify the clock to be able ...
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2answers
2k views

Nixie tubes displaying multiple number simultaneously

So my question is about nixie tubes. To skip the whole designing-my-own-controller part I settled for the arduinix (schematics) solution, which some of you might know. I am currently using an Arduino ...
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2answers
294 views

Design Questions for a Nixie Tube Clock

I'm making a Nixie Tube Clock as a project for a class. The whole point of the project is to essentially to do it from scratch. I'll be designing a PCB for the project and I want to put the ...
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2answers
442 views

Nixie Tube Voltage Safety

I have seen clock designs like this one: where the nixie tube leads are not fully inclosed. There is likely 145-170V on these lines. I am just wondering if it's safe to allow the leads to be exposed ...
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1answer
663 views

Common ground with two bridge rectifiers [closed]

I have a transformer with multiple taps on the secondary coil deliverin many different voltages and I want to know if I blow something up when I convert the AC of the transformer to DC with bridge ...
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1answer
1k views

Nixie tube has strange blue lights

I'm using a PCB with some nixies on it. They are driven by the KD155IC, which is a clone of the SN7441. I run them on 175V with a 10k Resistor, should give them a working voltage of 145V, 3mA. ...