2024-05-30 Cloud Seeding, Geoengineering Pros, Cons

A synopsis of various methods.


2024-05-30 Astroturfing By The Big Oil and Fossil Fuels Industries

Lies, lies, lies!


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 more BESS then the coal and natural gas plants can be shut down.

Renewables provided almost 30% of US electrical generation in March


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 power MOSFET connecting the  battery to the load, I would use a high current relay that isolates the load from the battery.  Loads can generate inductive spike voltages that could damage the MOSFET.


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 that it would be better to use used EV batteries for stationary battery storage.  But it’s possible that new sodium ion batteries will become so low cost that they will replace the used lithium EV batteries.  It just remains to develop production of sodium ion batteries to where the supply can meet the demand for battery energy storage systems.

The future holds many, many more EV batteries. And therein lies a solution to grid storage.


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 because the area is sparsely populated, with thousands of square miles of federal or state land.  The main disadvantage of installing WTs in those areas is the necessity of installing HV transmission lines to the population centers closer to the coasts.  Installing offshore WTs would reduce the distances to population centers, but offshore WTs have their own disadvantages.  The underwater cables are more expensive than onshore, so some of the advantage of shorter distances are lost.  But the biggest disadvantage of offshore is the harsh marine environment means higher installation and maintenance costs.  There has to be a special ship used for maintenance and servicing offshore WTs.  It’s much easier to service onshore WTs.  Plus the onshore WTs can be installed along with large solar farms and share the same power lines.  It should also be mentioned that the onshore WTs are not as expensive as offshore, however it takes more onshore WTs to generate the same amount of power.

So someday when the “low hanging fruit” of US onshore WTs have all been picked, then there will be more incentive to install offshore WTs.  Then there will be more offshore WTs in the Gulf of Mexico and East Coast of the US.  But along the West Coast the WTs have to be floating in deep water, which is more expensive.


2024-05-27 Britain Passes Automated Cars Act, Self-driving Cars Soon On The Road

This starts at the 12:45 point in this YouTube video from Electrified, Dillon Loomis.


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 100 filters, to ensure that signals from different bands don’t interfere with one another.)””

The article also talks about the “FR3 band” of 7 to 24GHz for the 6G smartphones.


2024-05-25 Voting For Republicans Because You’re Concerned About The Economy, WHEN EVERY SINGLE MAJOR RECESSION AND FINANCIAL CRISIS OF THE PAST 50 YEARS HAPPENED UNDER THE GOP, Is Peak Stupidity.

Let me rephrase that:

Voting for Republicans because you’re concerned about the economy is peak stupidity, WHEN EVERY SINGLE MAJOR RECESSION AND FINANCIAL CRISIS OF THE PAST 50 YEARS HAPPENED UNDER THE GOP.


2024-05-24 It’s A Full WAVE Bridge Rectifier!

I thank him for explaining that it’s *not* a “full bridge rectifier”!!

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