Comment by periblepsis on Why can't the following configuration be considered...
@needbrainscratched So you are good now that the supply rail is set right? By the way, just because, I find \$V_{+} =\frac13 V_{ _\text{OUT} } \$ and \$V_{-} = \frac23 V_{ _\text{OUT} }+\frac13 V_3\$...
View ArticleComment by periblepsis on Are there any LTspice models for OP AMPS with GHz...
@help_me_learn Yes. Part of the whole point of providing LTspice to the public for free was to sell parts! Pretty much everything sold by LT (or AD, one might hope, though that acquisition was 8 yrs...
View ArticleComment by periblepsis on Seeking examples where PID control fails
@DSPinfinity Then I've already provided such an equation. There are many more. But that's one.
View ArticleComment by periblepsis on LTspice models for 3.3V or 3.5V Zener diodes
@Seamus I didn't have any problems. I just did it again with LTspice and this is part of what it shows me: Select Diode dialog.
View ArticleComment by periblepsis on LTSpice simulation produced different results of...
Zhi, you don't show the time axis on the bottom graph. What exactly is the ringing frequency? Expand that diagram and show us both time and peak-to-peak timing (so we can get f out of it.) You have an...
View ArticleComment by periblepsis on Level shifter (floating shifting ?)
The level shift by itself would be pretty easy with a long tailed pair. It would probably be useful to operate it as a Schmitt trigger, too, as this has several advantages, including transition speed....
View ArticleComment by periblepsis on Does leaking water damage 7-segment displays?
This part of your picture shows significant discoloration, which makes me think about heat. (It could be something else, but heat comes to mind first.) So I'm not surprised here.
View ArticleComment by periblepsis on How to analyze and simplify a voltage divider with...
Yes, you have it right. What would satisfy you with respect to how to show that.?
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Answer by periblepsis for How to analyze and simplify a voltage divider with...
Your schematic with some comments added:simulate this circuit– Schematic created using CircuitLabAssuming you leave \$V_{_\text{OUT}}\$ unloaded, then \$V_{_\text{IN}}\$sees\$R_1\$ going to one ideal...
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Answer by periblepsis for How can i check what pin is configured to what...
I've never used the auto-generate capability. Not once. And now that I see how you used it and what you got out of it, I probably never will use it.This is how I've been creating symbols using the...
View ArticleComment by periblepsis on Can I control 2 circuits with a single on/off switch?
Do you want to use mechanical relays?
View ArticleComment by periblepsis on What does the standard deviation of TIE measurement...
You don't provide enough info to say what you can expect a year from now.
View ArticleComment by periblepsis on Will I run into issues if I connect a shunt 50 ohm...
In Fundamentals of Applied Electromagnetics, Ulaby & Ravaioli, 8/e they write this on page 64. About a factor of 10 different than you suggest. But many do use the figure you provide, too. :)
View ArticleComment by periblepsis on Rated current vs melting integral of fuses
You can find, buried in details, the concept of the action integralhere. It's only applicable under adiabatic conditions. But the idea is there. If you need an exposition, I can help out. But you'll...
View ArticleComment by periblepsis on Constructing the Voltage as a Function of Time for...
What do you know how to do? I mean, you have a current source and only two devices there to sink it. The sum of their currents will be equal to the current source. Do you know how to compute the...
View ArticleComment by periblepsis on Purpose of NPN transistors in this ESP32 circuit
It's already discussed here, back in 2017. Did you try and do a search before asking this question, using DTR and RTS?
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Answer by periblepsis for Issues with Audio Amplifier Circuit - No Output...
stream of consciousness on problemsI'm having trouble with an audio amplifier circuit that I designed,and I hope someone can help me figure out what's wrong.In order of badness (and this isn't a...
View ArticleComment by periblepsis on How does one find out if a multichannel digital...
Even if the channels are all sampled at the same time, they will have varying sampling phases between them -- likely different in each unit produced, but calibratable with the right instrumentation so...
View ArticleComment by periblepsis on Determine the voltages Va and V1 for the circuit
@Bucephalus You have a total of 30 V across the two resistors, 12 V across the left one and 18 V across the right one. But I'm guessing that you see this fact, now. The way I'd solve this is to move...
View ArticleComment by periblepsis on Simple electronic security system for a smart home...
A vague demand, a specific implementation limitation, and no functional specifications. I'd hook up a microswitch to a wooden box&lid, add a battery and a buzzer, and dump a bunch of loose,...
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