Earthquake Drill

Started by Steve Wilson in sci.electronics.design4 days ago 65 replies

Massive earthquakes in Mexico. Deadliest Quake to Hit Mexico in 30 Years Kills...

Massive earthquakes in Mexico. Deadliest Quake to Hit Mexico in 30 Years Kills 119 http://www.newsweek.com/deadliest-earthquake-hit-mexico-three-decades-kills- 119-people-667913 LA is next, then SF. Time to practise your earthquake drills and ensure everything is safe. Good time to move your company out of SF. It's coming.


MOSFET specs

Started by Sylvia Else in sci.electronics.design4 days ago 7 replies

I was looking for a high voltage MOSFET with a low drain source resistance. I was considering...

I was looking for a high voltage MOSFET with a low drain source resistance. I was considering this: http://au.rs-online.com/web/p/mosfet-transistors/8647925/ I cannot reconcile the information given there. Figure 3 indicates that at 25 degrees, an Id of 5.5 amps and Vgs of 10V will give an Rds of about 320 milliohms. So go to Figure 8, and for the same conditions it gives an Rds of ...


TCXO (shopping for replacement)

Started by George Herold in sci.electronics.design4 days ago 122 replies

Hi All, We have the following TCXO in a product. http://www.abracon.com/Oscillators/ASTX-01H.pdf We use the 5 ppm version, 4.096 MHz EOL, I...

Hi All, We have the following TCXO in a product. http://www.abracon.com/Oscillators/ASTX-01H.pdf We use the 5 ppm version, 4.096 MHz EOL, I tried contacting Abracon for replacements, but I've heard nothing back. (I'll try the phone later today.) I've got a bunch of PCB's that need the part. I went looking on Digikey for other TCXO's all are obsolete... (bummer) The part has a ...


JRC

Started by bitrex in sci.electronics.design4 days ago 7 replies

I should invest in JRC stock somehow; the more audio gear Asian manufacturers come out with the more of their 4558s they buy! Behringer alone...

I should invest in JRC stock somehow; the more audio gear Asian manufacturers come out with the more of their 4558s they buy! Behringer alone probably buys 100 million a year...


Mathematics predicts a sixth mass extinction by 2100

Started by Anonymous in sci.electronics.design4 days ago 6 replies

In a paper published in Science Advances, he proposes that mass extinction occurs if one of two thresholds are crossed: For changes in the carbon...

In a paper published in Science Advances, he proposes that mass extinction occurs if one of two thresholds are crossed: For changes in the carbon cycle that occur over long timescales, extinctions will follow if those changes occur at rates faster than global ecosystems can adapt. For carbon perturbations that take place over shorter timescales, the pace of carbon-cycle changes will


The Weather Channel

Started by amdx in sci.electronics.design5 days ago 12 replies

Stephanie Abrams on the Weather Channel makes watching weather information rather pleasurable. She's looking mighty fine this morning. ...

Stephanie Abrams on the Weather Channel makes watching weather information rather pleasurable. She's looking mighty fine this morning. Mikek


Now THIS is Clever, Creative and, Above All, Profitable

Started by Anonymous in sci.electronics.design5 days ago 1 reply

http://www.architectmagazine.com/technology/ikea-launches-augmented-reality-application_o

http://www.architectmagazine.com/technology/ikea-launches-augmented-reality-application_o


OT _ networking

Started by gm in sci.electronics.design5 days ago 12 replies

I have 3x RSP ( raspberry ) on one side of the road and 2x RSP on the other side. Each group is on different network and each of them have...

I have 3x RSP ( raspberry ) on one side of the road and 2x RSP on the other side. Each group is on different network and each of them have access to internet. For our project i want to connect all RSP into one LAN and connect them then to internet. The idea is to set one wifi router on one side and one on the other ( maybe TP-link ). Shortly, i dont want to use existing WIFI becaus...


three-body problem

Started by John Larkin in sci.electronics.design5 days ago 83 replies

Apropos of nonlinear simulation, this is interesting: https://en.wikipedia.org/wiki/Three-body_problem The simplified case (point bodies in...

Apropos of nonlinear simulation, this is interesting: https://en.wikipedia.org/wiki/Three-body_problem The simplified case (point bodies in an ideal Newtonian universe) has confounded mathematicians for centuries now. I was pleased to note the the wiki article mentions the possibility of collisions, which make things more interesting. They don't mention relativity, gravitional waves, rad...


Verifying the Datasheet and SPICE Model

Started by Tim Williams in sci.electronics.design5 days ago

A few more measurements this evening. ST's MDmesh II SPICE models are terrible, and their capacitance plots are characteristically...

A few more measurements this evening. ST's MDmesh II SPICE models are terrible, and their capacitance plots are characteristically wrong: www.st.com/resource/en/datasheet/stf19nm50n.pdf I had previously measured this, https://www.seventransistorlabs.com/Images/STP19NM50N_Cdss_Overlay.jpg which shows the capacitance tails off not quite so aggressively as the datasheet suggests. But it...


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