Comment by periblepsis on Confused about textbook answer of 4 Ohms for...
@AudreyKpodar Once you set the voltage source to 0 V and the current source to 0 A, all you have is a pair of 2 Ohm resistors in parallel with each other but going "nowhere" (open ended because the...
View ArticleComment by periblepsis on Why is the formula for the equivalent resistance of...
@Hearth While using SI is always a good idea, I prefer the symbol \$\mho\$. It literally takes me less mental time reading my notes (if I use S at all) because \$\mho\$ avoids the use of letters and...
View ArticleComment by periblepsis on Question about Falstad Analog Filter Applet
I don't and won't use falstad. But LTspice and QSPICE have no problems with this. Hopefully, some falstad expert may pop in here on that.
View ArticleComment by periblepsis on Can you DIY a TL431
I would guess that the schematic, despite looking sufficiently detailed, misses some important details. Such as relative junction areas. They may have just eliminated some of the important factors and...
View ArticleComment by periblepsis on What am I doing wrong that this relaxation...
dsa, Talk about how the design is supposed to work. Provide a clear discussion for us.
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Answer by periblepsis for Calculating Vab Without Reducing the Circuit Using...
You write that the following are not to be used:no circuit reductionno mesh (KVL) analysisno nodal (KCL) analysisYou instead decided to use source transformation, with the idea that this doesn't...
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Answer by periblepsis for Where to start on a class AB amplifier part 2
A simple class-AB, using discrete parts, would (as you show) use emitter degeneration to help deal with temperature and part variations. (I'm using about half the value you have in your schematic for...
View ArticleComment by periblepsis on Reemplazo de un módulo para encontrar diferencia de...
Por favor utilice inglés.
View ArticleComment by periblepsis on How to Import Vacuum Tube Models (12AU7) in TINA-TI?
I can't help as i don't use tina. But I'd like to suggest year you post, as code, the .inc file you have in hand.
View ArticleComment by periblepsis on How to find the RMS value of a triangular function...
OW1TY2, Do you already know the correct answer? (I think it is maybe 1 1/3 A.)
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Answer by periblepsis for How to find the RMS value of a triangular function...
The whole idea behind RMS voltage or current has to do with the equivalent DC level that would yield the same power into a load. So it's about the topic of...
View ArticleAnswer by periblepsis for 74181 A=B behaves differently in Logisim Evolution
Yes, the way the 74181 is arranged all four outputs, \$F_3\dots F_0\$, must be 1 in order for the A=B output to be 1. That's clear from the schematic and there's no questioning that fact.If you want it...
View ArticleComment by periblepsis on Transfer function Multi-Stage Amplifiers
@MihaiSava Then you are way out of your depth and need to go back a ways and bring yourself back up to speed. The transfer function would make the assumption of small signal analysis. Which likely...
View ArticleComment by periblepsis on How can I fix a conceptual misunderstanding about...
It sounds as though you want to understand how an bipolar transistor, one that is not saturated but is in active mode with the BC junction reverse biased, is able to permit large currents from...
View ArticleComment by periblepsis on What is the difference between resistance and...
I'd recommend studying the Drude model. It predates most of our current knowledge of particles. But, despite that fact, it is a very workable idea. I think most of your questions can be addressed there.
View ArticleComment by periblepsis on constant current source circuit
@ANONYMOUS You appear to want a low-overhead voltage system using two silicon bipolars. That's not going to happen. 80 mV drop won't directly drive your arrangement. If it could, then the system might...
View ArticleComment by periblepsis on Qualitative explaination of Output Characteristic...
@RishiNandhaVanchi If you are still around, in real life, and still looking to understand the details I would recommend "Physical Electronics and Circuit Models of Transistors" by Paul E. Gray &...
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Answer by periblepsis for How can I fix a conceptual misunderstanding about...
I'll stick with the injection version of the DC (level 1) Ebers-Moll model. It was the first description made and it is more intuitive. So I imagine it may provide a better shot at it. (I will...
View ArticleComment by periblepsis on Why does Pi model gives out a 2x low-f capacitor...
How do you compute the source output resistance when using the \$\pi\$-model? (I already know you know what it is for the T-model.) You should get the same value using either model. If you don't,...
View ArticleComment by periblepsis on What could be causing a difference between LTspice...
@SteKulov LTspice does flag an error -- one that specifically mentions the floating node and the current source.
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