A flexible power supply for Nixie tubes. Input voltage can be from 3V to 12V.Split summer school
Output up to V. It uses commercially available transformers. Not a member? You should Sign Up. Already have an account? Log In. To make the experience fit your profile, pick a username and tell us what interests you. We found and based on your interests. Choose more interests. The first few iterations of the power supply are done. I ended up with a couple of variations on the theme, and I am still tweaking them to get the best performance out of them. I'll add circuit diagrams, parts lists and OSHPark links in due course.
I hope that others will be able to produce their own variations of this and will share them with the public. What seemed to be apparent from the outset was that my design should use a transformer. Nearly all of the power supplies I have seen are boost converters. These are quite simple in principle - at least using physical principles, not engineering ones.
They rely on a collapsing magnetic field in an inductor to generate a voltage, the term I was taught for this was 'back-EMF'. To get it to generate more volts out than you put in, you want the field to collapse faster than you build it up. The power stays the same well, obviously less because of losses in the system.
So volts up, current down. A single inductor can typically give you in the order of a 10x increase in voltage. It seems obvious that one way to go higher is to use a transformer. Apparently, these are called flyback transformers. You can, quite literally, replace the inductor in a boost converter design with a transformer. At least in principle.The glass body is cylindrical with The base housing is made with real hard wood frame for stability and character; and laser-cut black opaque acrylic for the top and bottom cover to effectively bring out the glow from the tubes and LED.
Vacuum Fluorescent Display technology or VFD in short, was invented in s and it has since evolved over time from Vacuum tube indicators to Digital Digit Display in VFD technology is still used in many applications today, but not in the appearance of a tube.
VFD tubes contain phosphor coated anode that is bombarded by electrons emitted from the filament, and can come in different colors. VFD tubes unlike Nixie tubes, do not produce heat during operation. If you prefer automatic tracking of local time, the GPS receiver can be plugged in with the additional ports provided in the wooden frame. Optional thermometer can be connected to the additional port in the wooden frame should you wish to include temperature reading function and display.
A semiconductor ambient light sensor not photosensitive resistor is added in to automatically control the digit and back-light brightness according to the ambient brightness. Your email address will not be published. Notify me of new posts by email. Welcome to Nixie Clocks Shop!
Do note that all prices are now Singapore Dollar Denominated, hence, clocks are now slightly cheaper. Check out the full description below for more information. The tubes VFD tubes contain phosphor coated anode that is bombarded by electrons emitted from the filament, and can come in different colors.
Below are the images of IV tube and the translation of the original information content, The Base The base housing is made with real hard wood frame for stability and character; and laser-cut black opaque acrylic for the top and bottom cover to effectively bring out the glow from the tubes and LED. Features 1.
Lunar date display Calculate and display Chinese lunar date in relation to solar calendar. Day of week display Display day of week. Alarm Two alarm clocks, can be activate separately. GMT time zone functions The clock will calculate the local time based on satellite.
Transition effects 10 transition effects for the digits, and 10 transition speeds available Background lighting 8 colours selection, Back light settings include Fade in-out, On and Off. IR remote control IR remote controller operation. High accuracy Built-in high precision RTC module, accurate to within 60s per year. Power off memory Built-in backup lithium battery will maintain clock accuracy, all settings are saved without power for at least 3 years.
IN-14 Nixie Tube Clock. Assembled.
Actual operating time may be slightly less since it cannot run the batteries all the way down. I made a few mistakes that, if remedied, could allow for longer operation. One mistake was that I didn't provide a way for the accelerometer to be turned off, so that I could power it only part of the time to decrease power consumption.
How to control a Nixie Tube with Arduino
Another mistake is that I designed in only one button for setting the time. This button only increments the minutes, which makes for a very long time setting procedure. The time itself is kept with a The schematic for this power supply can be found in the LT datasheet. Even though the entire watch may look large, it is actually quite small for a nixie tube watch. Of course, this watch was not meant for practical use, so the size doesn't matter much.
It is purely a novelty item. If you could vote for me in the battery powered contestthat would be fantastic! Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
Reply 6 years ago on Introduction. To stay in keeping with steampunk, using a tilt switch might be more appropriate as a means of activating the watch by flipping the wrist. It would need to be somewhat insensitive so it only activates when you want it to. If you could find a way to keep decent time without involving a microcontroller that would be cool. Mechanical would be the coolest, but using a timer chip of some kind with some additional circuitry to translate to the nixie connections would be interesting.
So, two counter chips that increment from one to 60 on a clock pulse could be rigged to provide minutes and seconds. Since I am not the premium member I can't get my hands on to the PDF could someone give me more detail on this project.
Absolutely wonderful but you need a nice faceplate for it, hats off to you for using those Great nixies I agree with nnygamer Steam punk is the way to go. Introduction: Simple Nixie Tube Wristwatch. By trumpkin Hacker's Workbench Follow. More by the author:. Add Teacher Note. Did you make this project?Nixies were once the most popular digital display technology in use. A nixie works in a similar manner as an LED. They are both current devices.
Voltage is relatively unimportant, just as long as its high enough to initiate conduction. So supplies of V or somewhat higher up to V are commonly used. Once the nixie strikes the voltage, from anode to cathode, drops to its sustain value. This is usually in the V to V range.
An anode resistor is placed in between the supply and anode, to limit the current.
Nixie tubes usually see currents from 1mA to 3. See formula in drawing, above, for Ia. If this resistor were missing, the nixie would still like to drag the V supply down its sustain level.
With typical nixie supplies, that would finally happen when the supplies maximum is reached.1998 ford expedition 5 4 engine diagram diagram base
Normally, 25 to 60mA. This will not kill the nixie, immediately, but will age the tube quickly, and it will die within a few hours. Only they have a Forward Barrier Junction Voltage to overcome. It does not drop to a lower value. But the need for a series resistor to limit current still applies.Iso 45001 audit report sample
This is scope photo, of a nixie being multiplexed. The two traces are of the anode voltage, and the cathode current. When voltage is applied, it takes some time for the nixie gas in the tube to form an ionized plasmaand conduct current. For nixies this is between 10 to 50uS 0. Before conduction the anode sees the full supply voltage V in this example. This is not to be confused with overshoot of an underdamped system.
A nixie is not a reactive component. There is no initial surge. As you can see, the current actually rises rather slowly relatively speaking. If you multiplex a nixie, you need to add blanking intervals, to avoid ghosting.Since in last years nixies displays attracted my attention so much that I bought many of them, I finally managed to design a good power supply and my nixie clock is on the way The potentiometer lets you change the output voltage to fit different types of displays you can obtain from V to V DC.
My prototype has been built on a breadboard, but I also made a pcb from the schematic so you can etch your own board and solder the components. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. To understand the way a circuit can raise voltage from 9V to about V I had to make some research in the web, because I'm not so skilled in electronics to design my own circuit. Anyway I merged some information from the most exhaustive sources, and my circuit tries to be simple and efficient, but most of you readers can probably add some revision or advice.
The two best sources, which are must-see, have been arduinix. Another source was this document from www. On Threeneuron's website you also can find informations about the calculations to find the right R36 anode resistance value to limit the current for each type of nixie display. Look the notes on the image for more informations about the circuit. I also report the explanation of circuit functioning as -max- wrote in his comment: An inductor is used to create high voltage kickback.
This configuration is often found in boost converters, called that because the boost voltage. It works because one can not change the current flowing through an inductor spontaneously, inductors resist change in current. This means when the MOSFET turns on and passes a current through your inductor, the current flowing though it will steadily rise, "charging" it.
It will eventually reach saturation where the magnetic flux can no longer increase and the inductor acts like a short. This is sort of like stretching a rubber band or spring.
There is a point where you can no longer pull it tighter otherwise it will break. Once this point is reached or often just before itthe transistor turns off, and the inductor is allowed to "snap" back.
Remember, the current absolutly cannot change instantaneously. This voltage will slam up to infinity until a current flows between the 2 terminals. However, in the real world, there is stray capacitance within the inductor as well as outside it, especially if a capacitor is connected.
This creates a tank circuit, so the output will actually "ring," it is the equivalent to a bell, tuning fork, spring on a string instrument like guitar, etc. This can be seen on an oscilloscope with the probes connected across the inductor.
You will see the ringing and even the initial voltage spike, known as a "transient voltage spike. The voltage is all over the place as the inductor oscillates the capacitor smoothes this out, offering a clean DC high voltage to the nixie tube.Songs about drinking
Some detail regard the components. L1 is a fixed inductor uH 1A, threeneuron's lists some similar models of it, and they could be a little different in dimensions, so my pcb has space for long and short components.
The pcb has been obtained in DipTrace from my schematic. Maybe you can design a better arrangement for components, I didn't etched this board because I'll incorporate the supply circuit in my nixie clock board. There is space for a big heatsink, also if probably you don't need it. In alternative you can lay down the mosfet. On the left you can see the long shape of the inductance alternative.
On the lower right you find the Anode and Cathode contacts, where connect the display.Each Zen Nixie Clock comes with a comprehensive year product warranty. A Zen Nixie Clock is an original crafted to order by hand with exquisite attention to detail. OptiWhite glass used for glass cover optimizes clarity and minimizes green tint produced through standard glass containing iron.
Choose premium scratch-resistant black anodizing for a smooth, even surface with fine texture. In the 60s and 70s, nixie tubes were used on digital display of high-end scientific equipment.
Inspired by the originals that were manufactured in East Germany, our R ZM nixie tubes offer just the font, structure, and proportion needed to act as a perfect backdrop for our original timepiece. Resurrect an important era with a showpiece that employs the same vintage vacuum tubes that drove major advancements in science and technology of yesteryear.
Maintaining accurate time should be simple, minimalist, no-maintenance, and no-touch. Enjoy automatic synchronization with your web-based administrative panel for easy-to-maintain accurate time regardless of interruptions or outages.Ida pro download github
Simply log-in for initial set-up and let it go. Adjust online for daylight savings and modify time zone or visual effects from any internet-connected computer, smartphone, or tablet. Our goal is to make products that lasts. Therefore we provide 10 years of waranty for our tubes and software.Nixie tube power consumption - how long lasts 1 € of energy?
Learn more about warranty. Zen Nixie Clock quantity. A work of art. A glimpse into history. A touch of Zen. In case of power loss, the clock remembers all the settings and time will be synchronized automatically from internet. No need to search for user guide everytime you want to make a change in settings!
Silent circuitry — the clock is absolutely silent, there is no audible noise produced by its electronics. Direct driven design — nixie tubes are driven directly, this prolongs their lifetime. This helps to keep all digits of all tubes in good condition. Otherwise, the unused digits could stop working properly.
Rotary knob — for offline users, there is a rotary knob on the back of the board. Using this knob, user can enter into settings menu and do the settings manually. Online firmware update — the integrated wifi module makes online firmware updates possible.
Whenever there is a new firmware update new features, bug fixesyour clock can be updated remotely. Colon tubes — the clock comes with two colon tubes — separator tubes between hours, minutes and seconds pairs.
These tubes are unique for our clocks — we designed them specifically for our nixie tubes, they also use the same technology discharge in gas. Colon tubes match design of the nixie tubes by base and internal structure. Purist customers who prefers nixie tube glow only can set the underlight off. Technical specification Length mm. Width mm. Height mm. Weight 7. Power adaptor voltage range VAC Hz.
Power consumption max 14W. Power consumption with underlight LEDs turned off 7W.A few years ago, while managing the power management product line at work, I started an initiative with the development team to optimize new products by achieving ESE. The idea is centered on the engineering goal of product design to verify that the systems design equations match the simulation results and ultimately the experimental results.
When these three items match, not only do you understand a system, but you have the best chance to optimize a better solution.Leetcode vs hackerrank vs firecode
But to break through the ordinary and have a chance for the extraordinary, I would say this is a requirement. Since this power supply is just a fun design for an upcoming nixie tube clock project of mine, I have the time to achieve ESE.
Here is a quick video showing six IN-4 Nixie tubes being powered by a 5v iPhone charger.
IN-18 Nixie Tube Clock KIT
Enable Pin Pulled Low. One of the design tweaks discovered during the experimental verification was that the DCM boost converter can reduce the power FET turn-off loss by adding a snubber capacitor, C15 in parallel with Q1. And because the boost is operated in DCM, the energy stored in C15 will be recycled back to the input! With this snubber capacitor, a typical power FET, like Q1, in a switching converter will produce power dissipation during turnoff.
This is simply due to the fact that during turn-off, the power FET must block a relatively high voltage i. One way to reduce this loss is to reduce the gate drive resistor, R6, to zero ohms. This was a nice step, saving 0. However, even with R6 equal to zero ohms, the image below shows the power dissipation in Q1 when the power FET is turned off is still approximately 0. The top trace shows the power FET drain voltage rising from zero volts full on state to v full off state. The bottom trace shows the same current through the FET.
If we calculate the total energy dissipated during this period ie. However, by adding the correct value of C15, this power loss can be reduced to zero. While not zero, the image shows that the current in the power FET has been reduced below 1 amp See channel 1: The scope is looking at the 0. You may wonder where the energy stored in C15 goes? For a DCM boost inductor, this energy is recycled back to the input. Can you figure out where in this picture below that recycling occurs?
The combination of the R6 gate drive resistor and the snubber capacitor saved a total of 0. When the snubber capacitor was added, you will notice in the picture above that it takes some time for the current in the boost inductor to reach zero amps. To ensure there was an adequate margin for the inductor energy i. Replacing the Schottky diode saved an additional 0.
Schottky diodes are nice because they have a low on voltage i. However, at high voltages i. Although an ultra-fast silicon diode has a 0. The image below shows the fast transient response seen with this DCM boost converter. Chan 2, the AC coupled output voltage, drops only 74mV with a 15mA step load on the output.
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