LEDs and lasers get way more efficient when they are cold. But their junction drop increases too. So it seems that driving them from...

LEDs and lasers get way more efficient when they are cold. But their junction drop increases too. So it seems that driving them from some magical Thevenin source would temperature compensate the light output. Has anyone done this? I need to hold some dBm level from a laser source from -40 to +85C and that might be a simple way to do it.

https://www.ti.com/product/ADC32RF54 $1500.

https://www.ti.com/product/ADC32RF54 $1500.

There has been conjecture here about lithium battery ignition, thermal runaway, and whether any measurements could provide useful warning of a...

There has been conjecture here about lithium battery ignition, thermal runaway, and whether any measurements could provide useful warning of a possible cell explosion. Waiting for my biscuits to cook, a (very) little research turns up not much about failure dynamics. Most studies measure external cell temperature as indicators of thermal runaway. I found one study, from NREL, that used f...

The top chess programs now demolish the grandmasters. Scandals have developed, involving cheating, with players wearing hidden devices....

The top chess programs now demolish the grandmasters. Scandals have developed, involving cheating, with players wearing hidden devices. Recently, the world champion lost a game, apparently agitated, as his opponent was wearing... send the children from the room... an ANALOG WATCH!!! Such barbarism has no place in our modern civilized world. Anyway, organizers now scan the player...

Hi I have a problem with a Ethernet PHY that makes too much noise. We are digging into the problem, iterating on the very poor layout done, but...

Hi I have a problem with a Ethernet PHY that makes too much noise. We are digging into the problem, iterating on the very poor layout done, but the client is looking for a fix right now with now HW changes. The problem comes from the RMII communication to the PHY. Seems a 25MHz clock is feeding the PHY (LAN8742), which then in turn creates a 50MHz clock feeding back to the STM32 MAC. If I...

Has any member here used TCAD tools. I have downloaded the source code, compiled and tested the Archimedes(from nanohub.org) and it is generating...

Has any member here used TCAD tools. I have downloaded the source code, compiled and tested the Archimedes(from nanohub.org) and it is generating good results for simple devices as np diodes etc., I have also used it for more complex devices as sub-micron MOSFETs. I am curious to know how accurate results for the complicated devices are. Any hints, suggestions would be of great help.

This is from a couple years ago. The article mentions blueberries, almonds, and tomatoes.

This is from a couple years ago. The article mentions blueberries, almonds, and tomatoes.

I have microwave, fridge and 10 laptops on a 20A circuit. Fine most of the time until I use the microwave. Should I try a 22 Amp Interrupting...

I have microwave, fridge and 10 laptops on a 20A circuit. Fine most of the time until I use the microwave. Should I try a 22 Amp Interrupting Circuit breaker? Existing one might be 10AIC.

GaN business amounts to circa 1 billion dollars. Now China has join the ranks of countries that can produce GaN...

GaN business amounts to circa 1 billion dollars. Now China has join the ranks of countries that can produce GaN semiconductors. https://www.youtube.com/watch?v=1TFRJbuIk1I Groetjes Albert -- Don't praise the day before the evening. One swallow doesn't make spring. You must not say "hey" before you have crossed the bridge. Don't sell the hide of the bear until you shot it. Better one b...

https://www.zmescience.com/feature-post/history-and-humanities/people/albert-einstein-letter-mar ie-curie/

https://www.zmescience.com/feature-post/history-and-humanities/people/albert-einstein-letter-mar ie-curie/