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   Technology StocksCree Inc.

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From: Lou Weed12/10/2019 5:41:04 PM
2 Recommendations   of 10249
Cree: Compelling Long-Term Growth Story But Priced To Perfection

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From: Lou Weed12/11/2019 5:13:07 PM
   of 10249
Cree: Great Opportunities But Their Realization Remains Unclear

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From: slacker71112/12/2019 3:44:27 PM
1 Recommendation   of 10249
Just R&D for now, but an interesting potential new application for SiC.

Double eureka: Breakthroughs could lead to quantum ‘FM radio’ and the end of noise
by TRISTAN GREENE — 2 days ago in SCIENCE

Double eureka: Breakthroughs could lead to quantum ‘FM radio’ and the end of noiseCredit: Nicole Gray
A team of scientists from the University of Chicago discovered a method by which quantum states can be integrated and controlled in everyday electronics. The team’s breakthrough research resulted in the experimental creation of what they’re dubbing a “quantum FM radio” to transmit data over long distances. This feels like an eureka moment for quantum computing.

The team’s work involves silicon carbide, a naturally occurring semiconductor used to make all sorts of electronics including light emitting diodes (LEDs) and circuit boards. It’s also used in rocketry due to its ability to withstand high temperatures and in the production of sand paper – presumably because it’s coarse. What we’re excited about is its potential as a conduit for controlling quantum states.

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From: slacker71112/16/2019 10:01:38 AM
2 Recommendations   of 10249
Something to watch, there is a possibility that the US tax credits for EV's could have the cap boosted from 200,000 vehicles per manufacturer to 600,000. It is part of negotiations over a spending bill that is expected to be passed before the end of the year.

It would be fairly positive for US EV sales and thus Cree.


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To: slacker711 who wrote (10110)12/17/2019 9:35:33 AM
From: slacker711
   of 10249
Follow up, it doesn't appear that the EV credit will be increased.

Most manufacturers outside of Tesla and GM still qualify but many will hit their volume requirements by 2022/3 or so.


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From: slacker71112/20/2019 7:18:48 AM
2 Recommendations   of 10249
A SiC circuit breaker....six months old but interesting.

Atom Power Is Launching the Era of Digital Circuit Breakers
New digital circuit breakers that combine computing power with wireless connectivity may finally replace an 140-year-old electromechanical technology
By Prachi Patel

Atom Power is launching the first UL safety-certified digital circuit breaker panel combined with smart software and connectivity that could help monitor and control energy use of buildings

Circuit breakers have been mechanical switches for 140 years. Now Atom Power is launching the first UL safety-certified digital circuit breaker panel combined with smart software and connectivity that could help monitor and control energy use of buildings remotely.

In the dark, dank depths of your home basement hangs a drab gray box that guards the building’s electrical circuits. The circuit breakers inside switch off current flow when there is risk of an overload or short circuit, keeping you safe from fires or electrocution. It’s a critical job, and one that breakers have been doing with a fairly simple, 140-year-old electromechanical technology.

But circuit breakers are about to get a digital overhaul. New semiconductor breakers that combine computing power and wireless connectivity could become the hub of smart, energy-efficient buildings of the future.

“It’s like going from a telephone that just makes calls to a smartphone with capabilities we’d never imagined before,” says Ryan Kennedy, CEO and co-founder of Atom Power in Charlotte, North Carolina. “This is a platform that changes everything in power systems.”

Digital circuit breakers have been a holy grail in power engineering circles. Atom Power has now become the first to earn certification from the Underwriters Laboratory (UL) for its product, which combines breakers based on silicon carbide transistors with software. While UL approval isn’t legally required, it’s the industry safety standard for commercial use.

Breaker panels are the gateway to every electric circuit and appliance in a building. But those appliances themselves, and the way we use power and interact with the grid, are changing. “We don’t just turn stuff on and off anymore,” Kennedy says. Today, meters, load controllers, surge-protection devices, power-transfer switches, and demand management systems are found in every building to manage energy use. These systems are added on top of circuit breakers.

Intelligent, connected circuit breakers could replace those systems. They would be a one-stop shop to monitor energy use, control heating and lighting, charge electric cars at off-peak times, and switch between solar panels and the grid. “The breaker can perform the functions that a dozen different pieces of equipment do today,” Kennedy says.

Atom Power switch
Photo: Atom Power

Today’s circuit breakers are simple electromechanical switches. If current through a small electromagnet exceeds a certain level, the energy of the magnet throws off a mechanical switch. The mechanical process takes a few milliseconds.

Atom Power’s digital breaker works 3,000 times faster. It is essentially a large silicon carbide transistor circuit that measures load current and switches the transistor off when the current level is dangerous. The user can choose to wire the panel into a wireless router or into a closed LAN network, but the circuit breaker can run autonomously without an online connection.

Compared to silicon, silicon carbide transistors work at higher temperatures and switching speeds. The breaker detects a short circuit and cuts it off in 10 microseconds, says Denis Kouroussis, the company’s CTO and co-founder. That speed, he says, is crucial for preventing often-fatal arc flashes—explosive fireballs triggered by short circuits—in the large, high-voltage breakers found in commercial and industrial buildings, which is Atom Power’s target market.

“The breaker can perform the functions that a dozen different pieces of equipment do today.”

—Ryan Kennedy, Atom Power

The multibillion-dollar circuit breaker market is dominated by manufacturers such as Siemens, ABB, Eaton, Toshiba, and Schneider Electric. Most have attempted to make digital breakers. Work on solid-state circuit breakers has been underway for decades, but the materials science and computing power wasn’t advanced enough to make effective solid-state breakers even 10 years ago, Kennedy says. “There’s sensing and computation within each breaker so it’s hyper-fast but also smart.”

Siemens, ABB, and Eaton have all invested in Atom Power. But Eaton is also working on its own technology. In 2017, the company teamed up with Electric Power Research Institute and a dozen utilities to install its breakers in about 80 buildings. Stockholm, Sweden-based Blixt is working on digital breakers for the residential market.

The high cost of solid-state breakers is still a hurdle. Kennedy says their digital breaker costs two to five times as much as a mechanical breaker. But the cost of silicon carbide technology is coming down. And he thinks industrial customers should be willing to pay the extra price for a smart, safe product that should also potentially replace multiple other components in a building's electrical system

The company’s second-generation product that “cuts price in half and doubles performance” will be released in July and has several pre-orders already, says Kennedy.

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To: slacker711 who wrote (10112)12/20/2019 10:26:47 AM
From: Lou Weed
2 Recommendations   of 10249
Looks like that 2nd gen circuit breaker system is now available......


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From: slacker71112/27/2019 10:10:21 AM
1 Recommendation   of 10249
Volkswagen significantly raises electric car production forecast for 2025

1.5 million vehicles from the new ID. family in 2025
Strategic target of one million produced electric cars to be reached two years earlier than planned end of 2023

2020 to be dominated by the market introduction of the ID.3

Volkswagen E-Mobility Board Member Thomas Ulbrich: “The key year for the system changeover to e-mobility is ahead of us.”

Volkswagen’s electric offensive has picked up speed as planned. With the world premiere of the new all-electric ID.3 in September and the start of production at the Zwickau electric vehicle plant in November, the Volkswagen brand has already reached major milestones. 2020 will be dominated by the market introduction of the ID. family. The first ID.3 cars will appear on Europe’s roads in the summer. Over the next few years, Volkswagen intends to become the world market leader in e-mobility and is investing €33 billion in these efforts throughout the group by 2024, including €11 billion in the Volkswagen brand. Under the latest plans, the strategic target of one million electric cars is expected to be reached end of 2023, two years earlier than previously predicted. The Volkswagen brand expects 1.5 million electric cars to be produced in 2025.

“2020 will be a key year for the transformation of Volkswagen. With the market launch of the ID.3 and other attractive models in the ID. family, our electric offensive will also become visible on the roads”, says Thomas Ulbrich, Member of the Volkswagen brand Board of Management responsible for E-Mobility. “Our new overall plan for 1.5 electric cars in 2025 shows that people want climate-friendly individual mobility – and we are making it affordable for millions of people.”

World premiere and production start of the ID.3

With the world premiere of the ID.3 at the IAA 2019 International Motor Show in September, Volkswagen presented the first model in an entirely new generation of all-electric vehicles. The ID.3 is based on Volkswagen’s Modular Electric Drive Toolkit (MEB) and offers ranges from 330 to 550 kilometers (WLTP). The basic version of the model will cost less than €30,000. For the first time, Volkswagen also offered pre-booking for the ID.3. To date, over 37,000 customers have reserved an ID.3 and paid a pre-booking deposit.

Production of the ID.3 started in November in the presence of Federal Chancellor Angela Merkel. The vehicle is being produced at the Zwickau plant, which has been fully converted for this purpose. From 2021, up to 330,000 EVs will leave the assembly line each year, making Zwickau the largest and most efficient EV factory in Europe. Internationally, preparations for the production start of the ID. family are well underway in China and the USA. Pre-production of the ID. family has already started at the Anting plant in China.

Volkswagen moves into business areas related to e-mobility

In connection with its electric offensive, Volkswagen has also moved into a number of strategic business areas. With its newly established subsidiary Elli, Volkswagen is forging ahead with the development of charging infrastructure. Elli already has more than 10,000 power customers. Together with its dealers, Volkswagen is also installing its own charging stations. By 2025, a total of 36,000 charging stations are to be developed throughout Europe at dealerships and plants.

The opening up of the Modular Electric Drive Toolkit (MEB) to other manufacturers is also a trailblazing approach. Ford will be one of the first automakers to use the MEB. From 2023, the company is to offer an MEB vehicle in Europe and expects to sell more than 600,000 cars within six years.

Volkswagen has also laid foundations for the development, testing and production of battery cells. A battery cell factory with a capacity of 16 gigawatt-hours is to be developed in Salzgitter from 2020. The start of production is planned for the end of 2023/beginning of 2024. For this purpose, Volkswagen has entered into a joint venture with the Swedish battery manufacturer Northvolt.

Outlook for 2020: market launch of the ID.3

Over the coming year, Volkswagen will continue and step up its electric offensive. The ID.3 will appear on the market from summer 2020. Other members will also be added to the ID. family. The first all-electric SUV – the series production model of the ID. CROZZ – will celebrate its world premiere in the course of the year and production of this vehicle at the Zwickau electric car plant is expected to start in 2020, too. In Anting, China, the second Volkswagen plant worldwide will start production of electric cars based on the MEB.

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From: slacker71112/30/2019 7:20:46 AM
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Cree chooses Exyte as general contractor for $1 billion upstate factory

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A rendering of the planned Cree factory near Utica.

By Liz Young – Reporter, Albany Business Review
Dec 18, 2019, 12:29pm EST
Cree Inc. has selected Exyte U.S. Inc. as the general contractor for its planned $1 billion factory in Marcy, near Utica.

The semiconductor manufacturer is planning to build a 480,000-square-foot factory that will employ at least 614 people. The factory is expected to ramp up production in 2022.

Exyte U.S. — previously M+W Group U.S. Inc. — is part of a large international engineering and general contracting firm based in Germany. It has an American headquarters in the ZEN Building at the SUNY Polytechnic Institute campus in Albany.

The company specializes in designing and building computer chip factories and labs with cleanroom space. Exyte worked on the $15 billion GlobalFoundries computer chip plant in Malta and buildings at the SUNY Poly campus.

Cree plans to start work on its upstate plant this winter. CEO Gregg Lowe recently visited the construction site, where workers were getting the land ready.

New York state's economic development arm, Empire State Development Corp., plans to provide a $500 million grant to reimburse Cree for about half the project's cost as Cree meets certain goals.

Cree's total project costs are estimated to be more than $1 billion, including $183 million for design and construction, $300 million for facility fit-out, and $522 million for machinery and equipment, including some that Cree already owns, according to ESD board documents.

Cree will own the factory. It is expected to sublease the land for 49 years from Mohawk Valley EDGE, an economic development organization, which in turn leases the land from SUNY.

While the factory is being built, Cree (Nasdaq: CREE) is working out of space at the SUNY Poly campus in Albany, where it is using a silicon carbide wafer manufacturing line worth about $57 million. Cree recently made its first test wafers on that pilot line at SUNY Poly.

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From: slacker7111/14/2020 12:00:09 AM
2 Recommendations   of 10249
Building a Quantum Computer From Off-the-Shelf Parts
University of Chicago researchers develop stable and possibly scalable qubits by creating defects in commercial silicon wafers
By Mark Anderson

Like stars in a color-enhanced snapshot of the night sky, these yellow-green dots represent sites on a silicon carbide wafer where an electron beam has knocked out one silicon atom and one carbon atom.
Image: David Awschalom/University of Chicago

Like stars in a color-enhanced snapshot of the night sky, these yellow-green dots represent sites on a silicon carbide wafer where an electron beam has knocked out one silicon atom and one carbon atom. What's left behind is a "divacancy" pocket that harbors a single addressable electron. Researchers have found these single electron structures can be harnessed as possible quantum bits for quantum computation and communications.

A new technique for fabricating quantum bits in silicon carbide wafers could provide a scalable platform for future quantum computers. The quantum bits, to the surprise of the researchers, can even be fabricated from a commercial chip built for conventional computing.

The recipe was surprisingly simple: Buy a commercially available wafer of silicon carbide (a temperature-robust semiconductor used in electric vehicles, LED lights, solar cells, and 5G gear) and shoot an electron beam at it. The beam creates a deficiency in the wafer which behaves, essentially, as a single electron spin that can be manipulated electrically, magnetically, or optically.

“It’s ironic after 50 years or so of trying to clean up semiconductors to make high-quality electronics, our plan is to put the defects back in—and use them to make a trapped atom in a semiconductor,” says David Awschalom, professor of molecular engineering at the University of Chicago.

Awschalom says his group at Chicago is one of a number that have followed up on the promise of a pioneering 2011 paper by researchers at the University of California, Santa Barbara—who first discovered that small defects in silicon carbide could be manipulated to become essentially room-temperature cages for individual electrons, whose spins can then be used as a quantum bit for possible computations and communications.

And these individual electron spins inside silicon carbide, subsequent research has established, retain their quantum information for up to a millisecond (a long time in the world of quantum computing) and can be tuned and addressed both with electrical gates and with lasers.

The technique could offer a rare medium that’s isolated enough from thermal noise to host quantum phenomena like entanglement—but not so isolated that qubits can’t be manipulated and run through a series of gates and logical operations.

"Our approach is to see if we can leverage the trillion dollars or so of American industry that’s building today’s nanoelectronics and see if we can pivot that technology,” Awschalom says.

“We thought we’d just buy commercial devices, create defects in them and see how well they worked. We were fairly pessimistic, because the material wasn’t created for quantum information technologies,” he says. “You might think, ‘This can’t work.’ But this is the beauty of research, you try it anyway. And what we learned were a series of things we honestly didn’t expect.”

In other words, it worked. In their paper, published in a recent issue of the journal Science, the group reports the manufactured defects in their silicon carbide diodes produce a stable single electron pocket that holds together up to and well above room temperatures.

Because of the configuration of the defects—having to do with a symmetry in the silicon carbide lattice—the individual electron spin can be manipulated not only by magnetic fields but also by electrical fields as well.

“The one thing we can do today, like in your smartphone, is make a lot of transistors that are controlled with electrical gates,” Awschalom says. “So if you can control quantum states and their magnetic properties with electric fields, there’s an advantage. Because there’s a pathway to scale them using today’s electronics technology.”

The other key finding in the group’s research, he says, is the possibility for tuning these electron spins to be addressed by laser pulses as well.

The researchers published another recent paper in the journal Science Advances that finds the same silicon carbide qubits could be a potential quantum communication media. The spins, that is, can be manipulated to be resonant with light across a broad range—as in 800 gigahertz of range—of frequencies. And the line width of those spins, Awschalom says, is pretty tight, too—just 20 megahertz.

This means that any individual qubit could potentially be tuned to communicate across one of some 40,000 separate frequency ranges—sort of like a quantum ham radio with some 40,000 individual channels.

“You can begin to think about quantum multiplexing in a commercial wafer,” Awschalom says.

To be clear, Awschalom’s group does not have anything close to a working quantum computer at the moment. They technically don’t even have a provably viable quantum bit yet—for example, one that can be reliably and repeatably taken through the paces of any quantum computation or communication protocol. Although they do have a candidate qubit and quantum computer technology with a fair amount of innate promise.

“We’re not building quantum machines with silicon carbide,” Awschalom says. “But what’s exciting in these early days, these commercial-grade materials have beautiful quantum properties, which now is an easily accessible playground for researchers. One of the exciting things about this discovery is people can go online, buy a wafer and start doing these measurements.”

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