Questions tagged [device]
The device tag has no usage guidance.
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Why does it seem like the ideal photodiode model leads to a violation of conservation of energy?
Short version of my question:
Roughly speaking, the output power from a properly biased ideal photodiode feeding a resistor is quadratic with the optical input power, with seemingly no limit. So at ...
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Finding pressure sensor specifications of portable integrity test device
I have a portable integrity test device (BEA Technologies – Italy), model Z02030300 (X-150-N.)
The pressure sensor inside is broken. I do not know the manufacturer of the sensor.
Does anyone know a ...
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Justification for equivalent gate capacitance simplification in digital circuits
A MOSFET is, in reality, a four-terminal device with capacitances between each pair of terminals:
These capacitances are, of course, the standard MOSFET intrinsic and extrinsic differential ...
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Why do we usually operate well into strong inversion?
In textbooks like the venerable Gray and Hurst or in contexts like my introductory analog design class, it was always emphasized that with MOSFETs we always want our designs to obey some constraint ...
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How to learn about memristors as a circuit designer? [closed]
I'm trying to learn about memristors to play with it in circuit design. I think it might be more intuitive to do tests and measurements rather than reading maths formulas. The problem is that I don't ...
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ESP and a metal cover (but not on every devboad) cover under which it hides
This is regarding the metal cover on the ESP devboards, which covers, among others, the ESP itself, flash memory, etc.:
This topic has been discussed here before, and the reason for this cover is
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Is there a surge suppressor or power strip that doesn't draw power when switched off? [closed]
I've read that leaving electronics plugged in but not being used still draws power. Is this true? But if it was turned off it would probably not draw as much power as it would be if it was turned on? ...
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What is this used for and what is it? (Wooden base, metal strip connecting two terminal blocks with finger nuts and small screws.)
This was handed to us and I have no idea what the device is, or what its usage is.
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Will the saturation current through one of these NMOS circuits always be greater than the other?
Is there a definitive way to know for all cases if an NMOS would have a greater saturation current if a resistor R is connected to 1) the drain side or 2) the source side?
The assumption is that the ...
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Remapping a PCI(e) device when another core is accessing the device
According to PCI(e) specs, is it undefined behavior to access a leaf device from a CPU core when another core is remapping that leaf device to another physical address (e.g. for MMIO on ARM)?
If not, ...
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How to make LEDs produce light like incandescent light? [closed]
LED light flickers around 100 Hz and is caused by rectifying AC power. How can LEDs be made to emit constant light that comes from an incandescent element which does not flicker?
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Automated Hardware/Software Test
I am an Electrical Engineer and I don’t have a strong Software Engineering background.
My problem is: I need to test several Smart home devices. For example: a door that opens and closes (also 2 ...
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Trouble with body effect physics
I’m struggling to understand why a negative voltage applied to the bulk contact of an n-type MOSFET increases the threshold voltage.
I read other similar questions and I get that the negative voltage ...
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What is this technological device?
Today at work, I came across this device. One of the black lids has the inscription PGEP79. A small amount of colorless liquid was contained inside the transparent casing. Overall, it looks like an ...
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HAL USB device library transfer complete callback (USB MIDI adaption)
I have been able to implement Zac Rogers USB MIDI adaptation of the Cube MX USB device middleware:
https://github.com/zacrogers/blue_usb_midi
I can send USB midi messages on both F103 and F411. It ...
