LTSpice

Started by Cursitor Doom in sci.electronics.design2 hours ago 5 replies

When I last did a fresh install of LTS in July of 2009, the executable I downloaded from Linear weighed in at 8.8Mb. Earlier today I downloaded...

When I last did a fresh install of LTS in July of 2009, the executable I downloaded from Linear weighed in at 8.8Mb. Earlier today I downloaded the latest exe from what is now Analog.com (guess they took over Linear) and it's almost 42Mb. That's quite a tidy increase! Anyone know what reason(s) is/are behind this? -- This message may be freely reproduced without limit or charge on...


ICEs vs EVs and the oil supply/price

Started by amdx in sci.electronics.design2 hours ago 58 replies

Saw this on another group. All about the coming EV growth curve and it's effect. ...

Saw this on another group. All about the coming EV growth curve and it's effect. Mikek ***************************************************************** Interesting video analyzing the article below. The video is 20 minutes and the article is 22 pages but internet format. Enjoy. Watch this one: https://www.youtube.com/watch?v=aUC6lsLr04I&fea...


O.T. Moody’s Investor Service, might cut the US credit rating

Started by Winfield Hill in sci.electronics.design3 hours ago 62 replies

https://www.yahoo.com/finance/news/trump-tax-cuts-putting-america-203051912.html -- Thanks, - Win

https://www.yahoo.com/finance/news/trump-tax-cuts-putting-america-203051912.html -- Thanks, - Win


Cold Fusion explained - it may have been a nuclear reaction but it wasn't fusion.

Started by Anonymous in sci.electronics.design3 hours ago 34 replies

My IEEE e-mails included an interesting link for...

My IEEE e-mails included an interesting link for once. https://spectrum.ieee.org/energy/nuclear/scientists-in-the-us-and-japan-get-serious-about-lowenergy-nuclear-reactions?utm_source=energywise&utm_campaign=energywise-12-12-18&utm_medium=email What Martin Fleischmann and Stanley Pons saw in 1989 may have been energy release, but not from the source they imagined. Lewis Lar


OT Milgrom

Started by George Herold in sci.electronics.design4 hours ago 412 replies

So Milgrom is the guy who first wrote about MOND. His paper is a nice read. I found it...

So Milgrom is the guy who first wrote about MOND. His paper is a nice read. I found it here, http://adsbit.harvard.edu//full/1983ApJ...270..365M/0000366.000.html I got started because of Sabine's video, http://backreaction.blogspot.com/2018/11/modified-gravity-demystified-video.html So can't we just launch a probe out to where the force from the sun is ~ a_0 (about 0.1 light year) and ...


Turnkey vs. DIY Procurement

Started by Anonymous in sci.electronics.design4 hours ago 5 replies

Once I tried turnkey procurement I never looked back. It is so much easier to just let someone else manage that and pay the small premium. ...

Once I tried turnkey procurement I never looked back. It is so much easier to just let someone else manage that and pay the small premium. Recently my assembly houses have been having trouble finding a few components, so there is now a short list of "customer supplied components" (CSC). I'm not crazy about buying stuff again, but it is what it is. As long as I don't need to swit


Using cordless tool batteries to power a drone

Started by John Doe in sci.electronics.design4 hours ago 69 replies

Disclaimer: I'm not looking for the best drone power supply. I enjoy using high quality branded products. Of course it's all made in China....

Disclaimer: I'm not looking for the best drone power supply. I enjoy using high quality branded products. Of course it's all made in China. That is IMO a good reason to pay close attention to branding. I intend to pay VERY close attention to my battery pack temperature, and to take the endeavor very slowly. I have a spare Dewalt 20 V Max 6 amp hour battery, and a load of new 18650 bat...


Hearing aid

Started by Anonymous in sci.electronics.design6 hours ago 64 replies

Contemplating the possibility maybe of doing a very low cost hearing aid. But it's not something I've designed before. The musts: Use mass market...

Contemplating the possibility maybe of doing a very low cost hearing aid. But it's not something I've designed before. The musts: Use mass market off the shelf parts, so it will necessarily be large Decent battery life to keep costs down, not like the cheapskate ones you can get that only run a few days on coin cells. Using AAA or AA is possible. If a chip is used it must be a very common one -...


Oscillators at GHz frequencies -- question

Started by Anonymous in sci.electronics.design11 hours ago 26 replies

Could some electronics guru here please clarify this ? To design an amplifier at GHz frequencies with a BJT|FET, the base|gate and output...

Could some electronics guru here please clarify this ? To design an amplifier at GHz frequencies with a BJT|FET, the base|gate and output impedances are computed from the S parameters(at the operating frequency) for the BJT|FET, as provided by the device manufacturer. The impedance matching calculation is a big mess, but I have a simple C code that tackles this mess using the formali...


HDMI (cable?) Noise PROOF (second youtube video)

Started by Anonymous in sci.electronics.design14 hours ago 4 replies

In this second video I explore the HDMI (cable?) noise by cranking up the volume to max on the denon 1909 receiver. As far as I am concerned...

In this second video I explore the HDMI (cable?) noise by cranking up the volume to max on the denon 1909 receiver. As far as I am concerned this is now HARD CORE/100% EVIDENCE that something might be a-miss with HDMI cables and HDMI specification. What casts doubt on this is "coffee spill" on denon receiver. Therefore I will need YOU to repeat this experiment and let me know your finding...


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