exmadscientist

106 ms·

1201.
by exmadscientist 7y ago
My favorite use for them is when you've got to set a multi-bit field in a mask or register. If the hardware says bits 25-23 have to be 110 and bits 13-10 have to be 0101, reg = (0b110 << 23) || (0b0101 <<
1202.
by exmadscientist 7y ago
A couple recent exceptional datasheets I've come across include ADI's ADA4530 [1] and Renesas/Intersil's ISL28110 [2]; both, coincidentally, happen to be for regular old op-amps. The ADA4350 datasheet in particular is ab
1203.
by exmadscientist 7y ago
You're absolutely correct. I had the opposite problem to the article author: in high school, my handwriting was neater than it needed to be, but too slow. So I made a conscious effort to mimic one of my teachers, whose handwriting had
1204.
by exmadscientist 7y ago
Because it's a mostly unexplored corner of our solar system. The Voyagers were survey probes: they saw glimpses of a lot of interesting things, but couldn't stick around and solve any of the hard mysteries. (For example, just wha
1205.
by exmadscientist 8y ago
+1 for Univers! Honestly, it's right there in the names. Helvetica projects a very Swiss Modern feel to it. Sometimes that's what you want, sometimes it's not. Univers is the most neutral typeface around that's got any p
1206.
by exmadscientist 8y ago
> Can someone explain just exactly how do drug patents work? Can this legally work? I understand that normally patents cover processes or working inventions. I didn't think that the precise chemical bonds were required to be produce
1207.
by exmadscientist 8y ago
And yet, they're all that way! Hardware RTCs are horrible . (Well, almost all of them are that way. There are a few, precious few, sane parts that are just a 32-bit counter counting up at one second per second. These, of course, are r
1208.
by exmadscientist 8y ago
(To GP: Yes, I'm an electrical engineer.) Yes, size is the main product-level advantage of GaN. But it only lets some of the system shrink; for something like a mains charger, you still need the isolation magnetics, so your overall siz
1209.
by exmadscientist 8y ago
Cost, and the fact that it doesn't actually buy you much. I've evaluated GaN for a couple recent designs I've been involved in and found that its benefits simply didn't justify its costs. What GaN actually does is, mainl
1210.
by exmadscientist 8y ago
This is nothing new. I followed kernel development pretty closely about a decade ago and I was honestly very disappointed in what I saw. It's all about features, features, features, and there's almost no testing beyond "well,
1211.
by exmadscientist 8y ago
When numbering components, my favorite approach is to group designators by subcircuit. That means one circuit (say, an op-amp circuit) might have U41, R41-R46, C41-C43, and Q41; the next circuit would have U51-U52, R51-54, C51-59, and L51.
1212.
by exmadscientist 8y ago
Electronics DFM is one of those things that's really, really hard to learn. Most of the resources out there are lacking; they're either really basic stuff, really advanced stuff, or just plain incomprehensible. I am only aware of
1213.
by exmadscientist 8y ago
I had a semester of abstract algebra as an undergrad, and I've always been surprised by how many dividends that semester has paid back over the years. The tools of higher algebra are very powerful in the right situation. This article i
1214.
by exmadscientist 8y ago
What's different now is that everything is running out of steam, not just one component of the process. Lithography is getting exponentially more complicated: the cost of a mask set for a 7nm-class process is obscene. Materials are g
1215.
by exmadscientist 8y ago
Speaking as someone in the industry who's worked on Type C-enabled gadgets, half the bloody problem is that the Type C products offered by the major semiconductor companies are _terrible_. For sake of a simple example, consider designi
1216.
by exmadscientist 9y ago
Seattle-area hardware engineer looking for new full-time opportunities. 7+ years of experience makes me fully housebroken and has given me the pleasure of working on some amazing engineering. I've got an especially broad range of skill
1217.
by exmadscientist 9y ago
>If you can run a circuit without a converter, that would generally be superior. No, this will waste a lot of power in the high-supply-voltage region of the battery's discharge curve. There are three regimes to consider, for (say) t
1218.
by exmadscientist 9y ago
That line doesn't support ECC though, so it's a pretty poor choice for a production workstation. And the LGA2066 platform has power delivery and thermal issues [1], likely due to the launch getting pushed up and mainboard vendors
1219.
by exmadscientist 9y ago
Unfortunately, Abaqus is required for the work we do. According to our senior ME, it has the best contact surface handling and therefore is the only software that's suitable for our types of models. (I don't have much more detail
1220.
by exmadscientist 9y ago
The mesh is described in a bit more detail in Anandtech's previous article [1]. The figures are directly from the paper they cite [2], which is available on SciHub. I admit to not reading it in detail, only looking at the figures, but
1221.
by exmadscientist 9y ago
Very nice analysis. A couple of things stand out: 1. The mesh interconnect looks like a big loser for the smaller parts. It's a big jump up in complexity (there's an academic paper floating around which describes the guts of an ea
1222.
by exmadscientist 11y ago
No, absolutely not. Science is much different in 2015 than it was in 1915. The remaining problems are much harder and require the efforts of many, many more people to attack, but the archaic structure of the Prize means 99% of them can neve
1223.
by exmadscientist 12y ago
All of the fasteners I've bought on AmazonSupply have also been available on Amazon proper, they were just harder to find there. I really hope Amazon can improve their search interface for this stuff. While AmazonSupply was much better
1224.
by exmadscientist 12y ago
You know you've seen something special when the only thing you can think to say afterwards is "But it isn't supposed to do that ...".
1225.
by exmadscientist 13y ago
This isn't a newly discovered fundamental particle. This is a new form of behavior observed in ensembles of particles, in this case superfluid helium. This is an exciting new result in condensed matter physics, not particle physics. It