Comment by periblepsis on Why did we include I/3 as part of our KCL equation...
Why is the problem statement labeled 6.1 b and the correct answer key shows instead 6.1 c? Did you pull an answer from the wrong problem?
View ArticleComment by periblepsis on Compatibility of power supply
@WGroleau You can look for the manual on the drive and hope they specify the polarity. It's possible and worth a shot before risking destruction. Quite unlikely, but a very remote possibly, would be...
View ArticleComment by periblepsis on How do I know the r_e when doing a small signal...
It's the thermal voltage. If you want to understand it, in detail, then go here and read through the old page (it's no longer directly available). It covers the statistics involved. Otherwise, if you...
View ArticleComment by periblepsis on Soldering electric guitar to fix ground buzz and...
Jonathan, There are sites on the web that will walk you step by step through a process to find the exact location of the problem and how to fix it. I've seen them. They are good and will help you. I...
View ArticleComment by periblepsis on XOR gate (74xx86) not XOR'ing with DRAM (4164) on...
@paraparabolic I will only use wireless breadboards for audio. Sure, I might consider them for a little higher. But not anywhere near 1 MHz (or above.) Too many bad experiences trying. You might skim...
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Answer by periblepsis for How does the industry (not hobbyist) cope with the...
A lot of time, money, and life's blood has been spent over many decades to deal with the impact of temperature on circuits. Fortunes have been made on thermally stable voltage references and current...
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Answer by periblepsis for In Q_point of NPN BJT, Should Vce or Vc be set to...
You haven't selected Simon's answer. I'm not sure if I can add something that will help. But I'll take a shot at it. I'll dig right in rather than spend time on the underlying theory.Let's choose an...
View ArticleComment by periblepsis on Request for a General Proof of the Superposition...
Ronald E. Scott, Linear Circuits, New York: Addison-Wesley, 1960. He went in to prove it for dependent sources, as well.
View ArticleComment by periblepsis on How does this NPN transistor circuit work?
Just for those trying to understand the picture and question, that comes from a product series called "Snap Circuits". There's a similar circuit (without the microphone) being discussed at this EESE...
View ArticleComment by periblepsis on Velocity of conduction electron in a metal in an...
Which book? And I'm curious about the units of \$E_0\$. I'm probably misinterpreting \$e\$. What is it, exactly?
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Answer by periblepsis for Should Vce or Vc be set to half Vcc when setting...
You haven't selected Simon's answer. I'm not sure if I can add something that will help. But I'll take a shot at it. I'll dig right in rather than spend time on the underlying theory.Let's choose an...
View ArticleComment by periblepsis on Why use 1D simplification to derive semiconductor...
@YeslinS You can always just use your own imagination about what to expect. In fact, early investigators didn't have the advantages you have available today and had to use their imaginations, come up...
View ArticleComment by periblepsis on How do we calculate flux and force in this...
@TheoryQ It cannot be that \$\mu\$ is the relative permeability. It must be that \$\mu=\mu_{_0}\cdot \mu_r\$, where \$\mu_r\$ is the relative permeability. I can't help any if we disagree on this point...
View ArticleComment by periblepsis on which method should I use to convert a analog PID...
@satsof There are books on this topic alone. But one thing I'd like to suggest is that, and this goes especially for the case of PID, that when writing digital software for PID you should keep the time...
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Answer by periblepsis for OPA - How to calculate the input Impedance
The first thing you should have done is to put your schematic into the schematic editor here. It's a lot easier on the eye:simulate this circuit– Schematic created using CircuitLab(I held to your use...
View ArticleAnswer by periblepsis for How do we calculate flux and force in this...
You've not written much at the end. That's fine. I'll just attempt to answer your first question only. But I'll do so in the way I think about such things.Let me restate the details I think you are...
View ArticleComment by periblepsis on Class A power amplifier vs. voltage amplifier
My eye is immediately drawn to R6 and R7 as passive actors working in one direction each against the bases of Q4 and Q5.
View ArticleComment by periblepsis on Explanation for one of the signals on capacitive...
That's a really bad photo. I'll improve it since I own a copy of the book (the 3rd edition, in case it matters.)
View ArticleComment by periblepsis on Running Multiple LTspice Simulations from a Single...
Nadav, Some ideas cross my mind. If you supply a minimized circuit -- one that is the least complex but just enough to make your needs clear from the schematic -- then I might try to apply what's in my...
View ArticleComment by periblepsis on Explanation for one of the signals on capacitive...
@luna-arch No problem. These are the kinds of things we all have to pick up and learn as we go. Sometimes, it's not the circuit but the way we are using our equipment. And it helps a lot to be able to...
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