Ламповый дисплей для компьютера. Часть 1 — обзор концепций и постановка задачи

Всем привет! Мне с большим трудом удалось побороть лень и начать писать новый цикл статей, но на этот раз не о лазерах. Дело в том, что лазеры – не единственный мой интерес, значительное место в списке интересов у меня занимает ламповая техника в её разнообразных проявлениях, и совершенно особый фетиш – советская ламповая радиолокационная аппаратура. Мне давно хотелось отвлечься от лазеров и создать что-то такое, что, как бы это ни звучало банально, не имеет аналогов. Потому вспомнил одну старую идею, очень долго лежавшую в «долгом ящике». И речь в статье пойдет о нестандартных устройствах отображения визуальной информации.
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First Experiments With Molding glass for F Nixie tube | EP#2

https://invidious.privacyredirect.com/watch?v=3nsg0q2Pz6g

We need to develop a stem press machine for the new F nixie tube. A complex task that needs to be done step by step. In this video, I am doing the first baby steps ;-)

Starting new project: F | EP#1

https://invidious.privacyredirect.com/watch?v=KI3Te3UjatY

We are starting a new project, development a new nixie tube called F.

App note: The difference between current sense resistors and hall effect sensors for motor control

App note from Bourns’ comparing current shunt resistors and hall effect current sensing pros and cons. Link here (PDF)

Current sensing is an essential design function that is necessary in a broad range of applications. For example, current sensing is needed to detect a battery’s capacity, to measure current flow, or to calculate angles in motor control applications. Applications that can benefit from current sensing include Battery Management Systems (BMS), 3-Phase motor control units and On-Board Charging (OBC) Systems used in electric vehicles (EVs), and in other high energy charging-based designs.
Current sensing is also advantageous in medical equipment to detect leakage...

App note: A simple solution for LED overtemperature protection

Bourns’ new thermal cutoff device for LED protection can be found in this paper. Link here (PDF)

Compared to traditional lighting technologies such as incandescent and fluorescent lamps, LED lighting has a much longer life span, consumes far less energy and offers shock and vibration ruggedness. LEDs also produce very little heat and do not contain the toxic materials of predecessor lighting technologies.
One issue LEDs have is that they tend to fail when they overheat. The fabled long life of LEDs is very much dependent on them remaining cool or at least not being subjected to heat shock.
Bourns has recently released...

App note: Linear motion potentiometers

App note from Bourns on linear motion potentiometers and how they can be used to detect position by voltage division ratio. Link here (PDF)

The elements of the LMPs are manufactured with conductive plastic (CP) for extended wear capabilities. Unlike Trimmers, which are “set and forget,” these devices are designed to monitor position and are thereby designed to have a very high cycle life capability. LMPs are ideal for converting a mechanical linear motion displacement into a proportional voltage output when used as a sensor.

Free Stuff - September 2023

The September recipient for the Great Scott Gadgets Free Stuff Program is Erik. Erik is an Ojibwe filmmaker and artist. He has only had his amateur radio license for a short while but he is already assisting in running community demonstrations on how amateur radio can help in emergency situations. We are sending Erik a HackRF One so he can build a mobile training station and take his emergency preparedness demonstrations on the road to Native communities. As an avid camper and road tripper, Erik is also excited to eventually take his demonstrations into wilderness settings and rural communities. We...

App note: How Silicon Carbide power schottky diode properties provide enhanced application capabilities

Great read from Bourns’ white paper about the new SiC Schottky diode which revolutionize power handling capability and other benefits compared to Silicon diodes. Link here (PDF)

For diode applications, the ideal component would be one with no voltage drop during forward conduction and no leakage current when reverse biased. It would change instantly from conducting forward current to blocking reverse voltage. Compared to junction silicon diodes, Schottky diodes provide reduced voltage drop with decreased reverse bias recovery current.
This paper discusses the properties of Schottky diodes constructed using a silicon carbide (SiC) n-epitaxial semiconductor material layer attached to a metal contact...

App note: Trimmers interfacing with surveillance system sensors

App note from Bourns about the robustness of trimmers used on surveillance system, typically sealed to protect agaisnt harsh environment. Link here (PDF)

Trimmer technology is designed for use in applications where the unit must be calibrated before it is shipped to a retailer, and eventually the end user. Typically, these pre-calibrated electronics use a trimmer for required adjustments to account for component variations over time. Medical and industrial designs frequently take advantage of the system calibration convenience of a trimmer. In surveillance systems, the trimmer is adjusted to obtain the best resolution of the sensors at an
installation point.

App note: Basics of linear fixed resistors

App note from Vishay going back to the fundamentals of humble fixed resistors. Link here (PDF)

In the shadow of microelectronics, passive components such as discrete resistors would seem to have fallen out of the field of view in electronics. Yet, it is the rare circuit that can do without resistors. And a look at a modern circuit board will show that it has become more difficult to locate them visually.