Electronics Design

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anti-ENIG rant

We're doing a couple of picosecond timing projects and one of my guys sent me this link:...
7 comments posted 5yrs
posted by jlarkin
7 comments posted 5yrs posted by jlarkin

wirebond inductance

Any estimate of the wirebond inductance of a SOT-343 (SC-70) part? I'm simulating a little pulse generator that uses a...
2 comments posted 5yrs
posted by jlarkin
2 comments posted 5yrs posted by jlarkin

Desiccant really works

So we have these multispectral sensor gizmos that go on large harvesters. They obviously have to work outdoors, so we'r...
14 comments posted 5yrs
posted by pcdhSpamMeSenseless
14 comments posted 5yrs posted by pcdhSpamMeSenseless

RF: 802.15 v. Bluetooth

I am working on a project to collect data from 10 to 20 RF devices. 802.15 is the ideal solution, but bluetooth has an...
20 comments posted 5yrs
posted by edward.ming.lee
20 comments posted 5yrs posted by edward.ming.lee

Verifying Counterfeit Parts

With the current shortage and a factory fire, two parts I need are in very short supply and I am having to go to grey m...
16 comments posted 5yrs
posted by gnuarm.deletethisbit
16 comments posted 5yrs posted by gnuarm.deletethisbit

phemt diode

The late lamanted ATF-50189 phemt made an amazing diode. 1 amp and about 3 pF. I tried a MiniCircuits SAV-541 as a diod...
10 comments posted 5yrs
posted by jlarkin
10 comments posted 5yrs posted by jlarkin

PoE PD controller recommendations?

And, any "avoid-at-all-cost" experiences? Cost is important (100K+) but continued availability even moreso. Esp if the...
5 comments posted 5yrs
posted by blockedofcourse
5 comments posted 5yrs posted by blockedofcourse

Another 3D printed marvel

This is a cool use of a 3D printer! https://www.youtube.com/watch?v=j4Cfn5iATys
19 comments posted 5yrs
posted by DecadentLinuxUserNumeroUno
19 comments posted 5yrs posted by DecadentLinuxUserNumeroUno

google earth cartoons

Sometimes an Earth image has a real feature replaced by a cartoon. Check the reactor at 28°49'46.64N 50°53'09.46E in Ir...
5 comments posted 5yrs
posted by jlarkin
5 comments posted 5yrs posted by jlarkin

OT: When Will the Next Nuclear Accident Happen?

We don't hear about the many, many failures in nuclear plants that don't release radiation, but do cause a scram of the...
188 comments posted 5yrs
posted by gnuarm.deletethisbit
188 comments posted 5yrs posted by gnuarm.deletethisbit

Optimal Angle for Solar Power

I was nosing around the Internet looking for optimal angle calculators for solar panels. I'm not sure I found any that...
2 comments posted 5yrs
posted by gnuarm.deletethisbit
2 comments posted 5yrs posted by gnuarm.deletethisbit

The benefits of autism, what is autism ?

English: Autism is a defense mechanism for the brain. Autism is the brain's shield against mentally ill people. The aut...
41 comments posted 5yrs
posted by skybuck2000
41 comments posted 5yrs posted by skybuck2000

Home-made mices

I've done a couple of boards as subassemblies, with mouse-bites on the edges. https://www.dropbox.com/sh/te3csdd2mlszvf...
0 comments posted 5yrs
posted by jlarkin
0 comments posted 5yrs posted by jlarkin

Siemens Data Books from the 1970s

Going through boxes of old catalogs et al, I came upon some Siemens data books published in the 1970s, and I'm wonderin...
17 comments posted 5yrs
posted by joegwinn
17 comments posted 5yrs posted by joegwinn