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AC or DC: Which Is Better?

wired.com Rhett Allain 2025-12-18 05:30:00

As the story goes, the rock band AC/DC took its name from a label on an old sewing machine in the Young brothers’ home. It must have meant that the machine could run on either alternating-current or direct-current electricity. Today, all the newfangled electronic devices in our homes run only on DC power—even lighting fixtures, now that LEDs have replaced incandescent bulbs. But wait. The electricity that comes out of your wall socket is alternating current. That means each device needs to conv

Topics: current dc direct electricity power

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Galaxy Z Flip 7 problems and how to fix them

androidauthority.com Unknown 2025-12-18 16:30:52

Joe Maring / Android Authority The Galaxy Z Flip 7 is a bit controversial with its switch to Exynos over Snapdragon, but it’s still one of the very best foldable flip phone experiences you’ll find in 2025. Of course, nothing is perfect, and there’s bound to be a few bugs and glitches. Let’s take a look at some of the common Samsung Galaxy Z Flip 7 problems that might impact you and offer potential solutions on how to fix them. Problem 1: Bubbles or dents in the display Ryan Haines / Android A

Topics: android flip phone power volume

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I'll Never Go Camping Without This Backpack That Can Charge My Phone 18 Times

cnet.com See Full Bio 2025-12-18 23:00:00

CNET’s key takeaways This solar-rechargeable power station is also a backpack that can carry my camping essentials. I was able to charge my laptop six to nine times, my phone 18 times and my drone five times in one charge cycle. The Bluetti Handfree 2 backpack costs $599 at full price, but it is often on sale for $450. It's heavy. It weighs 16.5 pounds by itself before adding other gear. The Bluetti Handsfree 2 backpack, which is also a solar-rechargeable power station, is my new outdoor ess

Topics: backpack battery bluetti portable power

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Should you turn on Adaptive Power on iOS 26? Here's my advice after testing it

zdnet.com Adrian Kingsley-Hughes 2025-12-19 15:22:00

Does iOS 26's Adaptive Power Mode work? Adrian Kingsley-Hughes/ZDNET ZDNET's key takeaways The new Adaptive Power Mode in iOS 26 seems to noticeably improve battery life. The performance hit from activating this feature appears to be negligible. Be aware, though, that the iOS 26 public beta seems quite crashy right now. One of the features that I've been testing out in the public beta of iOS 26 is Adaptive Power. This is a feature that monitors battery usage, and when it is higher than usua

Topics: 26 battery beta ios power

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Should you let iOS 26 slow down your iPhone for better battery life? I tried it to find out

zdnet.com Adrian Kingsley-Hughes 2025-12-20 10:56:34

Does iOS 26's Adaptive Power Mode work? Adrian Kingsley-Hughes/ZDNET ZDNET's key takeaways The new Adaptive Power Mode in iOS 26 seems to noticeably improve battery life. The performance hit from activating this feature appears to be negligible. Be aware, though, that the iOS 26 public beta seems quite crashy right now. One of the features that I've been testing out in the public beta of iOS 26 is Adaptive Power. This is a feature that monitors battery usage, and when it is higher than usua

Topics: 26 battery beta ios power

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How to trigger a command on Linux when power switches from AC to battery

news.ycombinator.com Unknown 2025-12-20 10:03:54

After thinking about BusKill product that triggers a command once the USB cord disconnects, I have been thinking at a simple alternative. BusKill official project website When using a laptop connected to power most of the time, you may want it to power off once it gets disconnected, this can be really useful if you use it in a public area like a bar or a train. The idea is to protect the laptop if it gets stolen while in use and unlocked. Here is how to proceed on Linux, using a trigger on an

Topics: laptop power rules script udev

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In Disturbing Demo, AI-Powered Video Game Characters Panic When Told They're Just Code

futurism.com Unknown 2025-12-19 23:16:28

Last month, the union SAG-AFTRA, which represents video game performers and other actors, ended a nearly yearlong strike with a tentative agreement on "guardrails" against the use of artificial intelligence. The gaming industry has been in disarray, with publishers chomping at the bit to start harnessing AI to augment — or, realistically, replace — the jobs of voice actors and writers. And we're not just talking about scripts or voice lines generated by an algorithm. In the not-so-distant futu

Topics: ai game industry powered video

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How to trigger a command on Linux when disconnected from power

news.ycombinator.com Unknown 2025-12-20 22:03:54

After thinking about BusKill product that triggers a command once the USB cord disconnects, I have been thinking at a simple alternative. BusKill official project website When using a laptop connected to power most of the time, you may want it to power off once it gets disconnected, this can be really useful if you use it in a public area like a bar or a train. The idea is to protect the laptop if it gets stolen while in use and unlocked. Here is how to proceed on Linux, using a trigger on an

Topics: laptop power rules script udev

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In Disturbing Demo, Video Game Characters Panic When Told They're Just Code

futurism.com Unknown 2025-12-22 05:16:28

Last month, the union SAG-AFTRA, which represents video game performers and other actors, ended a nearly yearlong strike with a tentative agreement on "guardrails" against the use of artificial intelligence. The gaming industry has been in disarray, with publishers chomping at the bit to start harnessing AI to augment — or, realistically, replace — the jobs of voice actors and writers. And we're not just talking about scripts or voice lines generated by an algorithm. In the not-so-distant futu

Topics: ai game industry powered video

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Show HN: A High-Altitude Low-Power Flight Computer for High-Altitude Balloons

news.ycombinator.com Unknown 2025-12-22 22:51:10

Tiny4FSK - The Lightweight Horus Binary Tracker Built for HABs WORK IN PROGRESS - Please do not rely on this as your only tracking system. Tiny4FSK is still in the R&D phase of development and testing. NEW - Incorporated new Rev. 4 PCB files and code (12/21/24). STATE - Rev. 4 is fully working! Currently testing. What is the Tiny4FSK project? Tiny4FSK aims to be an ultra-tiny high-altitude tracking system. It runs on 1 AA battery that lasts for 10-17 hours (a few seconds between position up

Topics: arduino pin power radio si4063

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LG’s StanbyMe 2 is an unquestionably cool TV at a questionably high price

theverge.com Cameron Faulkner 2025-12-25 00:47:00

LG’s StanbyMe 2 has all the ingredients of a good follow-up gadget: the display is 1440p instead of 1080p, and instead of being trapped on its rollable stand, the screen is detachable for you to use wherever and however you want. It can hang on the wall if you buy a compatible strap, or you can rest it on its included folio cover, much like you would a tablet. It also has more ports beyond the one HDMI port and one USB-A port in the original model. You’ll get USB-C for connecting laptops, too. I

Topics: lg ports power screen stanbyme

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Sharge added a rechargeable battery to its sleek retractable charger

theverge.com Andrew Liszewski 2025-12-25 05:22:26

is a senior reporter who’s been covering and reviewing the latest gadgets and tech since 2006, but has loved all things electronic since he was a kid. Sharge has demonstrated again and again that the chargers and power banks you use to keep your devices running don’t need to look like boring gray bricks. The company has updated its transparent Retractable 65 wall charger, released earlier this year, with a 10,000mAh battery so it’s no longer completely dependent on an outlet. The only tradeoff

Topics: bank charge power retractable sharge

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AI Datacenters Are Raising Nearby Residents' Electric Bills

futurism.com Unknown 2025-12-26 10:04:46

If you're looking for someone to blame for your ballooning energy bills, we have an increasingly familiar culprit: AI data centers. A new analysis of one the US's largest power grids, PJM, found that a rise in customer energy rates is directly attributable to the tremendous power demands of these data facilities that undergird services like OpenAI's ChatGPT, the Washington Post reports. Serving 67 million customers, the PJM region covers just over a dozen states, including Indiana, Maryland, M

Topics: companies data energy power wapo

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Pick up this Anker power bank that can charge a laptop while it's 30 percent off

engadget.com Unknown 2025-12-26 15:06:48

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Get 25,000mAh of power and three USB-C ports for less than $100. Prime Day has come and gone, but power bank stalwart Anker still has some compelling deals to keep your devices charged while on the go. Among these is the Anker Laptop Power Bank, which carries 25,000mAh of portable pow

Topics: anker bank ports power usb

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Hands-on with Anker’s latest three products: Impressively thin MagSafe battery, more

9to5mac.com Michael Burkhardt 2025-12-27 10:18:11

Today, Anker announced three new products for its Anker Nano lineup of charging gear. It announced a new power bank, a new 7-in-1 charging station, and a new MagSafe/Qi2 battery – the last of which is certainly impressive. I’ve had the products for a couple days now, and I’ll be providing some quick impressions. Nano Power Bank (10K) First things first: a new compact power bank. It packs 10,000mAh of capacity in a very small form factor, and it’s one of the most impressive 10K power banks I’ve

Topics: bank new port power usb

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Intel next-gen desktop CPUs to feature 12-52 cores across Core Ultra 3, 5, 7, and 9 SKUs

techspot.com Skye Jacobs 2025-12-26 10:50:00

Serving tech enthusiasts for over 25 years.TechSpot means tech analysis and advice you can trust Highly anticipated: Intel is preparing to make a dramatic leap in desktop computing performance with its upcoming Nova Lake-S processors, aiming to significantly increase core counts for both consumers and professionals. This next-generation lineup, expected to launch in 2026, is designed to push the boundaries of multi-threaded performance, power efficiency, and platform connectivity. At the heart

Topics: core cores intel lake power

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Mobile BESS Powers Remote Heavy Equipment

news.ycombinator.com Andrew Moseman 2025-12-25 16:50:04

In June, a fuel delivery to a Johns Hopkins Hospital campus went terribly awry, spilling 2,000 gallons of diesel into Baltimore’s harbor. As the Maryland capital raced to contain the mess, responders discovered a problem: They didn’t have access to reliable power at the waterfront site. Usually in these kinds of situations, responders bring in fossil-fuel generators. But city officials wanted to do better than burning more fuel while cleaning up diesel. So they tracked down Scott Calhoun, chief

Topics: batteries bess mobile power volvo

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Bits 0x02: switching to orion as a browser

news.ycombinator.com Unknown 2025-12-26 17:24:44

bits 0x02: switching to orion as a browser July 24, 2025 The most interesting thing I wanna share is my browser switch. I’ve always been using Arc. As that is done, I made the switch to Zen. Pretty buggy but ok. The biggest problem I had was the power draw. As I’m preparing a more nomadic lifestyle, I really need to care for my battery. The power draw is really just way too high. By accident, I stumbled upon Orion. I’ve had it in the back of my head but for whatever reason never even looked at

Topics: browser draw need power ve

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The handy CUKTECH 15 Ultra Power Bank is at a record-low price!

androidauthority.com Unknown 2025-12-27 21:42:30

Edgar Cervantes / Android Authority Do you keep running out of battery? I’ve been searching for a battery pack that’s both easy to carry and powerful, and so far, the CUKTECH 15 Ultra Power Bank offers the perfect balance for my needs. It’s at a record-low price, too, and you can take it home for $71.99. That’s much more enticing than paying the full $109.99 retail price! Buy the CUKTECH 15 Ultra Power Bank for just $71.99 ($38 off) This offer is available from Amazon, and it comes in two stag

Topics: bank battery power price usb

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Low cost mmWave 60GHz radar sensor for advanced sensing

news.ycombinator.com Unknown 2025-12-25 20:41:39

The BGT60TR13C is a 60 GHz radar sensor with Antennas in Package (AIP) in an L-shaped array. Its built-in Finite-State Machine (FSM) manages FMCW frequency sweeps, data acquisition, and sample storage into the internal FIFO memory, while optimized power modes and DC duty cycling minimize power consumption. The sensor is configured and controlled via a standard SPI interface, allowing for easy integration into various applications.

Topics: 60 acquisition antennas power sensor

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Hurricane Season Is Here: Here's What Really Happens When Your Internet Goes Out

cnet.com See Full Bio 2025-12-29 05:00:00

Internet and power outages often linger briefly after big storms pass through, making it difficult to check in on loved ones. But sometimes, those internet networks can take much longer to repair. Over 974,000 homes and businesses experienced power outages after Hurricane Helene swept through rural mountain communities on Sept. 27. It was a hurricane that no one in the western Carolinas could have expected, a “one-in-1,000-year" storm worsened by prior rainfall and the region's rugged mountainou

Topics: fiber helene internet network power

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Adaptive Power Could Be the Best Low-Key iOS 26 Feature for Your iPhone's Battery

cnet.com See Full Bio 2025-12-29 05:12:04

If you've installed the newest iOS 26 public beta or developer beta, you may be able to get a jump on an upcoming feature that might deliver long-term benefits. Adaptive Power is a setting designed to extend battery power by selectively saving energy in small ways that add up. In fact, I'm looking forward to turning it on and forgetting about it. If you're (rightly) cautious about installing betas, it's something to anticipate when iOS 26 comes out in the fall. Let's look closer at how this tiny

Topics: 26 adaptive battery ios power

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SRAM Has No Chill: Exploiting Power Domain Separation to Steal On-Chip Secrets

news.ycombinator.com Jubayer Mahmod 2025-12-29 14:47:52

1 Introduction An increasingly connected world makes us dependent on computing devices that handle a wide range of security- and privacy-critical operations. We use smartphones and watches to manage bank transactions and store biometric information. On the industrial and government side, embedded devices monitor remote system operations and feed data critical to industrial processes and national defense. Physical access to these devices leads to a wide range of security exploits, including imper

Topics: boot data memory power sram

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Efficient Computer's Electron E1 CPU – 100x more efficient than Arm?

news.ycombinator.com Dr. Ian Cutress 2025-12-30 12:30:44

We've been building general-purpose CPUs wrong for decades, apparently. That's the bold claim from Efficient Computer, a new startup stepping into the embedded market with their Electron E1 chip. For too long, our processors have been stuck in a control flow model, constantly shuffling data back and forth between caches, memory, and compute units – a process I think we can all agree that burns significant energy at every step. Efficient’s goal is to approach the problem by static scheduling and

Topics: data e1 efficient embedded power

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100X More Efficient Than ARM Processors – Electron E1

news.ycombinator.com Dr. Ian Cutress 2025-12-30 18:30:44

We've been building general-purpose CPUs wrong for decades, apparently. That's the bold claim from Efficient Computer, a new startup stepping into the embedded market with their Electron E1 chip. For too long, our processors have been stuck in a control flow model, constantly shuffling data back and forth between caches, memory, and compute units – a process I think we can all agree that burns significant energy at every step. Efficient’s goal is to approach the problem by static scheduling and

Topics: data e1 efficient embedded power

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I found a $300 Motorola phone that offers flagship features at a fraction of the price

zdnet.com Cesar Cadenas 2025-12-31 00:46:00

Motorola Moto G Power (2025) ZDNET's key takeaways Motorola's Moto G Power is currently on sale for $299 on Amazon. It boasts multi-day battery life, a 6.8-inch Full HD+ screen, and decent performance for a mid-range phone. However, its similarities to the base Moto G may not be enough to convince people to pay an extra $100. View now at Amazon Motorola's Moto G Power is the sibling to the 2025 Moto G, a solid mid-tier smartphone that I reviewed not too long ago. The variant is not a huge upg

Topics: battery moto motorola phone power

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The next big wireless charging leap is coming soon: What Qi2 25W means for Android phones

zdnet.com Artie Beaty 2025-12-31 00:54:00

Kerry Wan/ZDNET Wireless charging is about to get a lot faster. The Wireless Power Consortium (WPC), an open standards development group of more than 300 members who work together to ensure compatibility between wireless chargers and power sources, announced a new, faster standard for wireless charging today: Qi2 25W. Also: The best wireless chargers: Expert tested Qi2 25W will deliver nearly 70% more power than the original 15W Qi2, which launched in November, 2023. The new standard will b

Topics: android charging power qi2 wireless

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Bluetti’s small, camp-friendly generator is over 30 percent off

theverge.com Brandon Russell 2025-12-31 05:52:10

We’re in the middle of prime camping season, when the days are longer and the temperatures are warmer. While it’s the perfect time to unplug, you don’t have to go completely off the grid, as Bluetti’s AC2P Portable Power Station can power your essential gadgets when no traditional power sources are available. And right now, the power station is on sale at Amazon (with an on-page coupon), Walmart, and Lowe’s for around $169 ($80 off), matching the all-time low we saw during Prime Day. If you pla

Topics: ac2p charging low power time

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Faster Qi2 wireless charging coming to iPhones and some Android phones

zdnet.com Artie Beaty 2026-01-02 10:00:26

Jian Fan/Getty Images Wireless charging is about to get a lot faster. The Wireless Power Consortium (WPC), an open standards development group of more than 300 members who work together to ensure compatibility between wireless chargers and power sources, announced a new, faster standard for wireless charging today: Qi2 25W. Also: The best wireless chargers: Expert tested Qi2 25W will deliver nearly 70% more power than the original 15W Qi2, which launched in November, 2023. The new standard

Topics: android charging power qi2 wireless

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I powered my home for two weeks with this portable power station (and it's $500 off)

zdnet.com Adrian Kingsley-Hughes 2026-01-03 05:56:15

ZDNET's key takeaways The Jackery Explorer 2000 Plus expands up to 24,000 Wh, powering a home for two weeks. Built-in wheels and handle make the Explorer 2000 Plus easy to move. The Explorer 2000 Plus delivers 3,000W power, fast charging, and rugged durability. View now at Amazon If you see the sun regularly, solar generators are the way forward. They allow you to capture and store the free energy that's beaming down from the sun, convert it into electricity, and store it in batteries. Solar

Topics: 2000 explorer max plus power

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Latest Tech News

AC or DC: Which Is Better?

Galaxy Z Flip 7 problems and how to fix them

I'll Never Go Camping Without This Backpack That Can Charge My Phone 18 Times

Should you turn on Adaptive Power on iOS 26? Here's my advice after testing it

Should you let iOS 26 slow down your iPhone for better battery life? I tried it to find out

How to trigger a command on Linux when power switches from AC to battery

In Disturbing Demo, AI-Powered Video Game Characters Panic When Told They're Just Code

How to trigger a command on Linux when disconnected from power

In Disturbing Demo, Video Game Characters Panic When Told They're Just Code

Show HN: A High-Altitude Low-Power Flight Computer for High-Altitude Balloons

LG’s StanbyMe 2 is an unquestionably cool TV at a questionably high price

Sharge added a rechargeable battery to its sleek retractable charger

AI Datacenters Are Raising Nearby Residents' Electric Bills

Pick up this Anker power bank that can charge a laptop while it's 30 percent off

Hands-on with Anker’s latest three products: Impressively thin MagSafe battery, more

Intel next-gen desktop CPUs to feature 12-52 cores across Core Ultra 3, 5, 7, and 9 SKUs

Mobile BESS Powers Remote Heavy Equipment

Bits 0x02: switching to orion as a browser

The handy CUKTECH 15 Ultra Power Bank is at a record-low price!

Low cost mmWave 60GHz radar sensor for advanced sensing

Hurricane Season Is Here: Here's What Really Happens When Your Internet Goes Out

Adaptive Power Could Be the Best Low-Key iOS 26 Feature for Your iPhone's Battery

SRAM Has No Chill: Exploiting Power Domain Separation to Steal On-Chip Secrets

Efficient Computer's Electron E1 CPU – 100x more efficient than Arm?

100X More Efficient Than ARM Processors – Electron E1

I found a $300 Motorola phone that offers flagship features at a fraction of the price

The next big wireless charging leap is coming soon: What Qi2 25W means for Android phones

Bluetti’s small, camp-friendly generator is over 30 percent off

Faster Qi2 wireless charging coming to iPhones and some Android phones

I powered my home for two weeks with this portable power station (and it's $500 off)

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