Nixie tubes were used for numeric - and sometimes alpha - displays back in the days before LEDs and LCDs. They were more light bulbs than tubes, but were encapsulated in evacuated glass shells like vacuum tubes and had round, multi-pin bases like tubes. Separate filaments were provided for each character. There were two basic varieties: characters that displayed through the top of the tube, and characters
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that displayed through the side of the tube. Nixie tubes are popular with builders of retro equipment, and a lot of products are available for sale that incorporate them; e. g. , clocks, wrist watches, radios, clock radios, calendars, games, and much more. Electronic test equipment and medical instruments were big users of Nixie tubes. I remember a couple of the signal generators we used on the MPN-14 radar has Nixie tube displays. Supposedly the name "Nixie" derived from "NIX I", an abbreviation of "Numeric Indicator eXperimental No. 1, " as designated by the Burroughs Corporation sometime around 1955. The HB-106 Nixie tubes for this project can be purchased on eBay. You can throw away the whirling number wheels, the tumbling golf balls in the squirrel cage, and the gallopin` dominoes! It`s, much more fun to play Bingo, Roulette, Put-and-Take, Quizzo, boy-girl parlor games, and a host of other games - electronically! By merely pressing a button, you can display a pair of randomly selected numbers for all kinds of numerical games in shining neon lights visible up to 20 feet away. This simple form of digital presentation is made possible by a modern little electron tube called a "Nixie. " Although specifically designed for computer panel read-out systems, the Nixie can be used in any device where any digit from 0 to 9 is to be displayed to a group of viewers. By using two Nixies, a pair of tiny electric motors, two...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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