DaveE's latest activity
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DaveE replied to the thread How Far is Due East From Due West on Earth?.How far is up from down? -
DaveE reacted to Baluncore's post in the thread Extracting capacitance and inductance from s-parameters with
Like.
If you are designing a PCB for operation over a narrowband, then your S-parameters will be for frequencies specified on both the low and... -
Time to invest in a dedicated pair of single-focus computer work glasses. Your health is worth it. :smile:
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DaveE reacted to Baluncore's post in the thread Undergrad Diodes and low grade thermal energy harvesting with Like.
Solar panels do not work in the dark. They are designed to operate at visual wavelength, in sunlight. Indoors, there will be thermal...
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DaveE reacted to anuttarasammyak's post in the thread Undergrad Finding the minimum distance between two curves with Like.
Yes, after we check that the curves do not cross at first. We may include not smooth points and end points on the curve in the survey...
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DaveE replied to the thread Undergrad Finding the minimum distance between two curves.Yes, as long as they exist and are unique. Otherwise you will also have to find the best one, like other min/max problems. There's...
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DaveE reacted to anuttarasammyak's post in the thread Undergrad Finding the minimum distance between two curves with Like.
Find the two points that share the same normal line. It would be a general way as @pasmith showed.
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You may be misunderstanding unique in this context. It doesn't mean that you can not produce the same subsets in different ways. What it...
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DaveE reacted to Charles Link's post in the thread Undergrad Finding the minimum distance between two curves with Like.
@DaveE These two are no longer identical parabolas, but I believe @Gavran 's method will work for them. I'll try to post the result...
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TDR is a plot of impedance (driver voltage) against reflection time. Z = √( L / C ) You cannot say if it is the inductance or the...
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DaveE replied to the thread Undergrad Finding the minimum distance between two curves.Excellent! Symmetry again. What about the curves y=4-x^2 and y=(2x-3)^2? Or y^2=x and y=(x+10)^2? I've given this zero thought, but I...
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DaveE reacted to Charles Link's post in the thread Undergrad Finding the minimum distance between two curves with Like.
@Gavran has an interesting way to solve problems of this type when the curves are to the second power. I thought I'd try his method on...
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DaveE replied to the thread Engineering Half wave voltage doubler.Of course. But the OP didn't specify the load on the doubler, among other things. These circuits have a significant output impedance...
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DaveE reacted to Charles Link's post in the thread Undergrad Finding the minimum distance between two curves with Like.
@DaveE Excellent. In hindsight, your solution where you pointed out the inverted and translated symmetry of the two essentially...
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DaveE replied to the thread Undergrad Finding the minimum distance between two curves.My approach relied on symmetry and geometrical reasoning with just a tiny bit of calculus. Since these two curves are translated and...
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