Comment by periblepsis on Is there a single ended input single ended output...
Wouldn't grounding one of the differential inputs give you what you want? But you might search for "transimpedance amplifiers" to see if there's anything that meets your definitions.
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Answer by periblepsis for Why is the LTspice simulation behaving differently...
I thought I'd spend a little time on your question. There are a few things to know about LTspice. I don't have a fuller explanation for you. But I can say a few things that may help you in the...
View ArticleComment by periblepsis on What type of crystal oscillator is this?
Hmm. Too bad that the Droitwich transmitter no longer uses 200 kHz and is now 198 kHz. There goes the calibration step mentioned in the docs.
View ArticleComment by periblepsis on General solution for the impedance of a finite...
You will want to read chapter 7, Generating Functions, in the 2nd edition of Concrete Mathematics by Graham, Knuth, & Patashnik. Or just look up some tutorials on the topic.
View ArticleAnswer by periblepsis for Mesh Analysis - 4 variables
The Photon is telling you exactly what you use in order to have four equations and four unknowns. The fourth equation is \$I_0=I_3\$.Using freely available SymPy and going clockwise for the mesh...
View ArticleComment by periblepsis on Singular Matrix error while adding filter capacitor...
@PankitShah I talk about behavioral diodes in LTspice here. Please carefully consider your designed mode for the behavioral diode. If you specify the diode well (read what I wrote) then the simulation...
View ArticleComment by periblepsis on Low pass filter with Sallen Key topology
@Nicolas Thanks for getting going on your question with others. I especially thought that Raonoke wrote well for you. In any case, they suggest a Butterworth because of the lower max-Q for the stages....
View ArticleComment by periblepsis on Advice Needed on Component Selection for a Small,...
A CR2032 isn't going to power something where the gong sound is clear and loud. Not unless you are wearing headphones.
View ArticleComment by periblepsis on HCSR04 Ultrasonice sensor in ESP32 - giving wrong...
There is a necessary blanking period because the outgoing pulse is immediately sensed. (I've not looked at your code.) You may need to ignore returns that occur early. Are you aware and taking that...
View ArticleComment by periblepsis on Is this really a neon lamp?
And here I was hoping you'd ferret out a nice smd neon bulb for me! ;) My first use of ne-2 bulbs was as a long series chain to act as a voltage regulator for a Geiger counter that need 1.4 kV....
View ArticleComment by periblepsis on Internal system timer oscillations on modern...
10 milliseconds in 10 minutes is about 17 ppm. That doesn't seem inconsistent. In 24 hours that would instead be about 100 ppb. And that would be unusual, I think.
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Answer by periblepsis for Singular Matrix error while adding filter capacitor...
If you carefully read the help documentation in LTspice, on the topic of diode models, you will see that it says "There are two types of diodes available."One of them is the usual sophisticated version...
View ArticleComment by periblepsis on FPGA: Must clock crossing FIFO be made up of BRAM?
I like the ZipCPU site for educating myself on FPGA coding. There's this link on Crossing clock domains with an Asynchronous FIFO and this link on Minimizing FPGA Resource Utilization, which has a...
View ArticleComment by periblepsis on AND Gate from LEDs to drive another LED
Aside from the other good comments, have you looked at the 7415? It's got (3) 3-in AND gates with open collector outputs that can sink enough current for an LED and can be wire-OR'd for that purpose....
View ArticleComment by periblepsis on Building a very simple analog computer (summation...
Would you be willing to just use an analog taut band meter as your display of analog values? Rather than LEDs? (The LEDs would require digitizing your analog values. And going-digital seems...
View ArticleComment by periblepsis on Where is the spice simulator documented
See Circuit Simulation with SPICE OPUS: Theory and Practice by Tadej Tuma & Árpád Buermen, Section 3.9.
View ArticleComment by periblepsis on Why does simulation differ each other in ngspice...
kile, Did you notice the the ngspice number you report is exactly the same as the current source magnitude? Separately, what do you work out by hand as the correct answer?
View ArticleComment by periblepsis on Closed loop transfer function of two cascaded systems
To find \$\frac{Y_{n+1(s)}}{Y_{n(s)}}\$ without feedback from...
View ArticleComment by periblepsis on I need help understanding my main electrical panel
The breaker sum often exceed the service rating. Expectation is that the circuits will not be all operating at the same time. In newer panels (US) there is a master breaker. In your case, this one...
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Answer by periblepsis for I need help understanding my main electrical panel
It's very common that the sum of the individual breaker ratings exceed the rating for the panel and service. This is done with the expectation that the home-owner won't attempt to operate all of the...
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