Nice to know how to ID the polarity of SMD LEDs. https://lighthouseleds.com/blog/polarity-guide-of-0402-0603-0805-1206-and-most-all-smd-leds.html
Archive for the ‘Websites’ Category:
2024-06-06 Investment In Clean Energy Likely To Be Double Figure For Fossil Fuels, IEA Says
Quote: “”Low-carbon electricity investment driven by solar projects but oil and gas spending still too high to meet climate goals”” The IEA predicts investment in clean energy will reach $2 Trillion in 2024. Quote: “”The warning comes days after a separate IEA report revealed that the world is off track to meet the goal of
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2024-06-04 Gallium Nitride MOSFETs To Revolutionize Power Electronics
Gallium nitride power electronics will replace silicon and will make laptop power adapters smaller than a golf ball and will save major amounts of electricity. GaN devices will waste a lot less power, which will enable power electronics equipment to be made smaller and more efficient. Quote: “”GaN-based power electronics, on the other hand, could
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2024-06-03 LDES Increasingly Competitive But Unlikely To Match Li-ion’s Cost Reductions
The cost of Lithium-ion batteries is still dropping and sodium-ion batteries use even lower cost materials, so it’s likely that the long duration energy storage – LDES – will not catch up for some time. One LDES is green hydrogen, and hydrogen LDES systems seem to have stagnated, partly due to the falling prices of
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2024-05-30 Cloud Seeding, Geoengineering Pros, Cons
A synopsis of various methods. https://www.facebook.com/groups/climatechangeBD/permalink/10160631399507606/?mibextid=Nif5oz
2024-05-29 Renewables Provided Almost 30% of US Electrical Generation In March
That’s great to see! There needs to be more BESS – battery energy storage systems – on the grid to replace all the gas turbine peaker plants that have to supply the grid when the sun sets. Once the grid gets 3 or more times the amount of renewables onto the grid and a lot
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2024-05-29 Solar Panel Controller To Charge Lead-Acid Battery
This is a simple charge controller that includes a dump load to dissipate excess power from the PV panel. D1 is the reference voltage that feed the 393 comparators, and its forward voltage changes with temperature. It would be better to use a low power LM317 to give a stable 1.25 volts. Instead of a
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2024-05-28 Many More EV Batteries – Solution To Grid Storage
Article about recycling EV batteries versus using EV batteries for stationary storage. At this time, recycling is not very efficient. Quote: ““Today we are not very good at recovering metals, loosing almost all the lithium, silicon, phosphorus, aluminum, and graphite, while recovering only copper, cobalt, and nickel which are more expensive,” he says.”” This suggests
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2024-05-28 US Offshore Wind: Is It Dead In The Water?
The US has a huge amount of land with a very good supply of wind, and this has been developed with a large amount of WTs – wind turbines. Iowa has a lot of WTs, but Texas is the WT leader by far, with over 30 Gigawatts of installed WTs. Installing WTs is relatively easy
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2024-05-26 Researchers Invent Mini Tuneable YIG Filter 3.4 to 11 GHz for 6G Datacomm
This is an interesting article: mainly about a miniature Tuneable YIG – yttrium-iron-garnet – filter that could replace many fixed filters. Quote “”Wireless devices use different filters for different frequencies, with the effect that covering all frequencies or bands requires large numbers of filters that take up substantial space. (The typical smartphone includes upwards of
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