Questions tagged [microelectronics]
The microelectronics tag has no usage guidance.
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Failed in upload firmware to esp32
I'm having an issue when uploading code to my ESP32. Previously, I had configured the partition scheme to 'minimal,' and I was able to upload code without any problems. However, after I fixed my ...
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CMOS AC-to-DC Converter Design
I am trying to analytically model the power conversion efficiency of an AC-to-DC power converter circuit (see Figure 1). In this design, the drain-source voltage of each MOS device can be expressed as ...
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Can a variable be locked at hardware level?
I changed out of curiosity the max speed variable of my car ECU from 250Km/h to 60Km/h to see if the car reach that speed and hold there or I can go beyond and get a warning but it turns out that I ...
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How to build and power very large scale addressable LEDs?
A 2 part question. I've built large scale LED projects in the past, but for the next one it would be massive (a black hole disc with a diameter of 54 ft), and addressable LEDs on the top and bottom. ...
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Second small surface one integrated CPU
I was changing the thermal paste of my CPU and I noticed, there where two metallic surfaces but only one was covered with thermal paste. The heatsink-plate is big enough to cover both surfaces, though....
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How to know which opto-coupler is suitable for high current application?
I would like a suitable opto-coupler to use as isolation from a 12V and around 30A current and another for 5V and around 30A. Are there any good opto-couplers for those ratings?
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Voltage drop on amplifier signal after LED switches on
Circuit above shows my design for amplifying PIR sensor signal, which I then feed to Arduino and based off this signal I switch a LED on.
Both, the LED and PIR sensor, are on the same voltage rail (9V)...
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Battery size and maximal power output [closed]
Generally how does the size of the battery affect its maximal power output(together with other factors like materials, for instance)?
Under the current engineering technology and with any possible ...
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What is the maximum distance for eavesdropping? [closed]
There is a closed question
https://physics.stackexchange.com/questions/276667/what-is-the-maximum-distance-for-eavesdropping-sound-waves
on Physics Stack Exchange and I thought this might fit better ...
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Devices powered and charged via electricity generated by human body
I came across articles like:
https://www.sciencedaily.com/releases/2021/02/210210142049.htm
https://pubmed.ncbi.nlm.nih.gov/27836601
and
https://www.dailymail.co.uk/sciencetech/article-2004801/Weve-...
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Can internal heat reduce significantly a laptop's lifespan?
Some days ago I had an heated debate (pun not intended) with a friend regarding the use of my laptops.
Basically he says which I'm slowly killing them by using them for computing intensive tasks which ...
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What is theoretical (physical) limit a MicroSD card's capacity?
There was time (a decade ago) when I got 8 MB (yes, 8 MB, not 8 GB) SD card for my Nokia ...
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Arduino DAC to Speaker
I'm working with an Arduino Due's two DAC pins.
I want to output to a single 4W 5.7Ohm speaker to test my code, with the intent of eventually outputting to a set of speakers (woofer, mid-range, and ...
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How to establish good ohmic contacts between Gold electrodes and Germanium Hall bar?
I am trying to get good ohmic contacts at low temperatures (4K) for a SiGe/Ge/SiGe quantum well Hall bar and so far this has been very challenging to me.
The electrodes are made with Gold and these ...
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How to connect Arduino to brushless motor through only 1 digital pin
I know how to connect motor to Arduino with 3 wires: 5v, digital pin and ground. As I know only digital wire need to control "speed control" of my motor. So, if my Arduino connected to computer and it ...
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Electronic component datasheet handling
What is $V_{IH}$ and $V_{IL}$ in datasheets? I found High-level input voltage and Low-level input voltage on the datasheet?
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How to drive 12V servo motors using 5V PWM or 3.3V PWM using ARM MCU?
I have to drive several 12V servo motors. So I wanna to get 12V PWM Controller (12V Logic Controller). I have MCU as Atmel SAM3X8E arduino due board. It has 5V PWM outs. Is there any Controller IC ...
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Controller vs Micro controller?
What is the difference between both of these terms? Especially in configuration and application?
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What kind of mechanism can be used to rotate a part in 180 degrees (Ψ (yaw)) and 30degrees in 𝜃 (pitch) direction?
Let's say we have a flat object. We are asked to create some mechanism so that the part can rotate in the shown angles above. What mechanisms can be used?
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Hover Stylus for capacitive touchscreen
Capacitive touchscreens do not rely on touch as the name suggests but rather measure the distortion of the electrostatic field. To my understanding a touchscreen might be able depending on the build ...
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Name of protocol used to communicate with Fuelling Station Dispensors
I am trying to figure out the actual (Range of ) communication protocols used to communicate with Fuel Dispensers at fuel retail outlets.
I see them write 2-wire protocol which is not specific as ...
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How do I make sure I don't damage electrical components (L293D, RaspberryPi, & DC Motors)?
I have a RaspberryPi that will control 4 DC motors. I will be using 2 L293d ICs. The 2 ICs will be powered by a 24v 5A Power Adapter.
Question: What other components do I need?
I imagine I would ...
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How to use consumer electronics for industrial application on high temperature
I need to measure the width of a bar made out of glowing red steel (900-1200 degrees Celsius) using computer vision.
In order to ensure resolution of a 0.5 millimeters/px, the camera is needed to ...
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Making my microcontroller transmit audio to any bluetooth headphones/speakers
I am creating a microcontroller on a custom PCB design for an MP3 player. I would like to consider integrating bluetooth into it. When I say integrating bluetooth into it, I specifically mean ...
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Why resolution of photolithography evolved gradually?
Moore's law states that no of transistors on a given area doubles every 18 months. Electronic components are typically made by photolithography. So, Moores law basically limits the resolution of ...
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RTC interface with PIC16F877A
I am newbie to embedded programming. My problem is I can write and read data to ds1307(by saying using I2C debugger). But my received data on LCD showing 0xE1 constantly for every changing second. Is ...
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Can different analog and mixed signal devices be combined on a single chip
Say I want N-ADCs, M-amplifiers, K-filters, and why not, an oscillator too. Is there a platform to combine whatever device i need, and that this platform is implemented on a single chip?
I know an ...
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Effect of magnetic field on electronic components
Are electronic components like diodes,transistors, micro-controllers, microprocessors, wireless transceivers etc are damaged by strong static or dynamic magnetic fields? If yes, at what strength the ...
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