Comment by periblepsis on I have to design a synchronous counter by following...
I provide some direction about how to proceed here.
View ArticleComment by periblepsis on die with 555, 4017 and 4026 need extra pulse after...
Yeah. It's easy enough. You don't want to use an MCU?
View ArticleComment by periblepsis on Electromagnetic Question
"I don't know how a line is parallel to the y-axis and at the same time it is located at point x = 2m and y = -2m." I completely agree with you. It doesn't make sense. Perhaps it would make more sense...
View ArticleComment by periblepsis on Latching circuit with Un-latching delay using...
Anaya, I would like your thoughts used in making this design.
View ArticleComment by periblepsis on Circuit To Simulate Capacitive Touch Button Press -...
@RunnerIain I think you are saying (but I'm uncertain) that the tumble dryer itself has a capacitive touch button on it that you want to control using an MCU rather than a manual touch by hand and that...
View ArticleComment by periblepsis on On the gain of an NPN Common-Emitter Amplifier...
@cardompal With regard to the question in your first bullet, I'd suggest the first level (DC only) large scale Ebers-Moll models shown in this answer from jonk at EESE. (The hybrid-\$\pi\$ version, an...
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Answer by periblepsis for Where is the first pin when a chip has a bar and...
I've circled it for you:But always take a look at the datasheet, too. Start with identifying the package as D:Then go look at the package:The bar identifies the index area.
View ArticleAnswer by periblepsis for Is there a reason the LED current is being limited...
It's possible they just wanted to operate the bipolar in mild saturation with \$\beta\approx 100\$ and with \$V_{_\text{CE}}\approx 500\:\text{mV}\$ and using an emitter resistor to provide local NFB...
View ArticleComment by periblepsis on Two capacitively coupled LC circuits: where did I...
@FriendlyLagrangian I haven't looked over your work yet. But it is rare to discuss Lagrangians and Hamiltonians and Legendre transformations here. For some, a little nomenclature context may help....
View ArticleComment by periblepsis on How to build DIY home energy backup system (UPS)
Sounds like you want to connect a large (20 kWhr) battery system that is random, and not necessary compatible, to a large (4-7 kW) UPS. The only answer, given your experience, would be to find both and...
View ArticleComment by periblepsis on Charging NiMH: What happens if your varying charge...
See here. If any of it isn't understood, ask help about those parts.
View ArticleComment by periblepsis on Microcontroller source impedance concern a
Spend a lot more effort describing your fast signal source and your application requirements.
View ArticleComment by periblepsis on MAX488ESA+ - Mixing Two Different Serial Streams on...
@ghan.154 I only have some experience with RS-422, but I generally agree with Dave here. That said, and also because you should want to include larger problems that may be found in externalities such...
View ArticleComment by periblepsis on BJT based current source (small currents)
user4, You will need to specify more details to get the question re-opened. Do you need to control the small current value? Or can it be fixed? If fixed, what's the value? Do you need initial and...
View ArticleComment by periblepsis on 6N137 opto-coupler with AC input takes a lot of...
@mhdAwskamel Just doing a quick sanity check, I took a look at a circuit I designed some time ago using the 6N137. Notebook says that with an input pulse of 1 mA and a rise time of 500 ns at the input...
View ArticleComment by periblepsis on Why there is only few multi channel high side...
Given the accuracy of your study of the current situation, and absent any specific advantages that may be present in some of what you found, this would cause me to prefer low-side current control and...
View ArticleComment by periblepsis on Varying sine frequency with varying amplitudes
I've offered an answer, recently, here that discusses a method where you can just enter a frequency and it develops the sinusoidal approximation. You can change the PWM frequency, relative to the...
View ArticleComment by periblepsis on Import LTSpice model
@KaleM Have you resolved this? Or lost interest? There's a debugging process that you should find understandable when faced with lots of models/subcircuits like this. You apply them one by one and test...
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Answer by periblepsis for Simulating Near Sine Wave PWM
In LTspice, perhaps an adaptation of something like this:Above, v is the output voltage you want. f is the sinusoidal frequency. And r is an integer to use for oversampling of f. I set it to 25, but...
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Answer by periblepsis for How do you solve for v_o in this clipper circuit?
What you have is essentially this:simulate this circuit– Schematic created using CircuitLabAll I've done is some re-drawing to finally get to the above-right.The input voltage has a peak magnitude of...
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