Comment by periblepsis on Unable to get the UART interrupts when configured...
The designers would NOT design a peripheral that could not be properly operated by software using the modes and methods they provided for it and documented. So there are two possibilities. (1) ARM has...
View ArticleComment by periblepsis on Electromagnetics - Velocity of conduction electron...
Yes, I know that, too. Teslas. I'm looking at the first equation in the exercise itself. There's no \$B\$ there. What's in the brackets is unitless. On the left, I take it is...
View ArticleComment by periblepsis on Does an emitter follower really improve a zener...
Nugget, A lot has already been written in a dozen ways. One more thing to keep in mind: actual zener diodes are designed to operate within a relatively narrow range of currents while providing the...
View ArticleAnswer by periblepsis for Common Emitter Biasing
Alex, go here for the simple non-linear DC model developed in 1954: Ebers & Moll, "Large-Signal Behavior of Junction Transistors".That model (or all three of the equivalent models shown at that...
View ArticleComment by periblepsis on Star ground or ground pour?
I suspect you are unsure because you don't well enough appreciate what the two do for you. That is not a fundamental flaw. Don't get me wrong. For most of us mortals it takes a lot of time to acquire...
View ArticleComment by periblepsis on Current measurement in non-hydraulic mental model...
Kaboom, Spend a moment thinking about the Drude model. It has its problems, as it predates most of our modern understanding of atoms, but it's a good start. For fun, look up spintronics on Google. It...
View ArticleComment by periblepsis on Finding the Language and Compiler Specification for...
Chris, I've had a lot of experience disassembling code. But prior to the existence of tools like Ghidra. To add a little more to what Tim wrote you can often work out the language/compiler tool (and...
View ArticleComment by periblepsis on How is it even possible for the L298N to actually...
Did you assume that their blocked-out logic gates are limited to 5 V signalling?
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Answer by periblepsis for How to properly choose resistor values in emitter...
If \$R_{_\text{B}}\approx \frac1{10}\beta R_{_\text{E}}\$ and \$I_{_\text{E}}\approx \beta I_{_\text{B}}\$ then you know that \$I_{_\text{B}} R_{_\text{B}}\approx I_{_\text{B}}\frac1{10}\beta...
View ArticleComment by periblepsis on Setting Up the Differential Equation for a...
Yeah. It's pretty obvious that there should be a magnitude of 600 mA in the inductor, given enough time. I don't see any of your work with respect to a specific solution that accounts for initial...
View ArticleComment by periblepsis on How to Modify 7447 IC Output to Improve 6 and 9...
Do you need to use a 7447 for some reason?
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Answer by periblepsis for Using a common emitter amplifier, given a specific...
procedureAssuming you don't need to worry about a circuit that tolerates operating at different values of \$V_{_\text{CC}}\$, don't care about working well over operating temperature variations, and...
View ArticleComment by periblepsis on Impedance matching between coil and antenna?
There is a very important video here on the general topic you bring up, including shortening a dipole and using a small inductance to balance against the newly capacitive behavior. Mostly, this is...
View ArticleComment by periblepsis on How to solve current mirror with emitter degeneration
The BCM53DS only matches \$\beta\$. Not \$I_{_\text{sat}}\$. Degeneration deals with \$I_{_\text{sat}}\$, not \$\beta\$. Sadly, matched pairs on \$I_{_\text{sat}}\$ are harder to find and matched pairs...
View ArticleComment by periblepsis on Common emitter amplifier not working as intended
Follow the instructions here. And take careful note of the difficulties involved with such high voltage gain.
View ArticleComment by periblepsis on Global reset pin being both an input and output
Microchip usually does a yeoman's job of documentation. Did you see this note: 1. The signal is internally pulled up with a 10 kΩ resistor?? It is important that you read the documentation carefully....
View ArticleComment by periblepsis on Door motor problem
You may also want to consider moving your question here.
View ArticleComment by periblepsis on Transistor Switch and Beta Coefficient
I found it. You are talking about "Learning the Art of Electronics: A Hands-On Lab Course" by Thomas C. Hayes published in 2018, I think. This page in particular.
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Answer by periblepsis for Door motor problem
An actual remedy would require a very close examination of the sensor and system details. Detailed photographs may be required. And you may be required to open up "non-serviceable" modules in order to...
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Answer by periblepsis for Transistor Switch and Beta Coefficient
You are not talking about "The Art of Electronics" but about a student manual called "Learning the Art of Electronics: A Hands-On Lab Course" by Thomas C. Hayes and published in 2018. ISBN...
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