EEVblogDave analyses Veritasium's video "The Big Misconception About Electricity" and how energy flows in the Poynting vector in the electromagnetic field OUTSIDE the wire instead of inside the wire. youtube.com/watch?v=bHIhgxav9LY Extra notes on simulation: youtube.com/watch?v=lBycH31K-E8
00:00 - Veritasium's video "The Big Misconception About Electricity" 00:32 - Rection to the points in the video 01:11 - This is a bit MISLEADING! 02:28 - Electron drift 03:51 - Engineers use different tools and theorems 04:27 - Every electrical engineer knows this 05:17 - Everything he says is correct 08:24 - What is current? 09:30 - He doesn't address this in the video. Poynting vectors at DC 11:12 - How the lightbulb works 12:41 - At the physics level, it's correct 14:11 - My only problem with this is... 15:08 - Is it just an academic discussion? 16:17 - The undersea cable is just early transmission line theory 17:20 - So what is the answer to the question? 22:06 - What about skin effect and DC? 25:44 - Let's simulate this and answer the question 29:18 - Transient analysis 33:00 - DC Steady State analysis 34:28 - The quantitative values don't matter 38:25 - But what about DC steady state? 40:24 - What does Richard Feynman think?
EEVblog 1439 - Analysing Veritasiums Electricity Misconceptions VideoEEVblog2021-11-24 | Dave analyses Veritasium's video "The Big Misconception About Electricity" and how energy flows in the Poynting vector in the electromagnetic field OUTSIDE the wire instead of inside the wire. youtube.com/watch?v=bHIhgxav9LY Extra notes on simulation: youtube.com/watch?v=lBycH31K-E8
00:00 - Veritasium's video "The Big Misconception About Electricity" 00:32 - Rection to the points in the video 01:11 - This is a bit MISLEADING! 02:28 - Electron drift 03:51 - Engineers use different tools and theorems 04:27 - Every electrical engineer knows this 05:17 - Everything he says is correct 08:24 - What is current? 09:30 - He doesn't address this in the video. Poynting vectors at DC 11:12 - How the lightbulb works 12:41 - At the physics level, it's correct 14:11 - My only problem with this is... 15:08 - Is it just an academic discussion? 16:17 - The undersea cable is just early transmission line theory 17:20 - So what is the answer to the question? 22:06 - What about skin effect and DC? 25:44 - Let's simulate this and answer the question 29:18 - Transient analysis 33:00 - DC Steady State analysis 34:28 - The quantitative values don't matter 38:25 - But what about DC steady state? 40:24 - What does Richard Feynman think?
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #MailbagEEVblog 1643 - DONT BUY this Cheap 7kW 32A EV EVSE ChargerEEVblog2024-10-01 | You get what you pay for in EV chargers. Don't buy this super cheap 7kW 32A EVSE Charger. Does it even meet the IEC 62752 it claims on the label? Or the US UL 2231 standard?
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00:00 - My first digital and analog multimeters, Soar ME-533 + Micronta 22-201U 03:20 - Battery terminal corrosion, of course 05:13 - My first pair of pliers and screwdriver 06:11 - Teardown 08:10 - Removing the LCD 10:24 - LCD under the microscope, the magic fluid escaped 15:14 - Conductive LCD traces on glass
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #multimeter #repairEEVblog 1641 - How DC Solar Isolators Work (TEARDOWN)EEVblog2024-09-25 | How DC Solar Isolators Work (TEARDOWN)
00:00 - Teardown of Benedict LS25 Solar True DC Isolator Switch 04:29 - How the contacts work 06:02 - How arc chutes and arc barriers work 12:11 - 5000V arc testing
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Keysight #OscilloscopeeevBLAB 121 - NEW Fluke 87VI Multimeter! MAYBE?EEVblog2024-09-12 | WTF is going on here. Fluke marketing leaked out a page about a new Fluke 87VI multimeter, and it's an R&D marketing trick to get feedback on the prototype?
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00:00 - NEW Keysight HD304MSO 14bit ADC Oscilloscope with Megazoom V ASIC! 08:19 - Boot up 10:24 - New User Interface 14:12 - A few bugs 15:40 - 100MHz Signal Gen 16:28 - USB & Quick Action 18:13 - Intensity Graded Display DOWNGRADE? 19:30 - Ethernet remote and VNC 21:01 - Screen Scaling? 22:59 - Measurements 23:44 - Coming soon... X-Y & Roll 24:52 - 100uV/DIV ? 25:38 - Measurement on full data or screen? 27:34 - Trigger level range limitation, another coming soom feature 28:02 - Comparison to R&S MXO4, Half the noise, and 14bit vs 12bit 29:57 - Update rate comparison 30:44 - Noise measurement at 1V/DIV 31:17 - Custom ADC speculation 31:55 - BRUTAL Update rate comparison, Megazoom Magic 35:13 - Lack of bandwidth filters, maybe another coming soon option... 36:53 - 16 HD mode vs 18bit HD 37:10 - 14bit ADC TESTED 38:14 - Window docking & Tiling & Full Screen 39:08 - Zone triggering 40:31 - Serial decode 41:43 - NEW FEATURE: Fault Hunter 45:50 - 1GHz Passive Probe! 46:43 - Conclusion
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Keysight #OscillosocpeEEVblog 1637: Solar Freakin Space Mirrors! - Reflect Orbital DEBUNKEDEEVblog2024-09-02 | Reflect Orbital wants to put reflecting mirrors in space to sell sunlight to solar farms after dark. The numbers work out exactly as you expect them to. It's Solar Freakin' Space Mirror time!
00:00 - Reflect Orbital, Sunlight After Dark 01:18 - Ben Nowack from BenNBuilds Youtube channel & the balloon test 02:55 - Sun synchronous polar orbit reflecting mirror satellites 03:54 - A look at the website claims, a 5km sunlight spot for 4 minutes 05:58 - This isn't new, the Russians did it with the Znamya 2, albeit unintentionally 06:56 - Who's behind Reflect Orbital? 08:12 - What is the Duck Curve? 09:31 - CLAIM: A 10m x 10m satellite mylar reflector into a 12U Cubesat 10:09 - CLAIM: 10's to 100's if BILLIONS of dollar per year revenue! 10:35 - CLAIM: $50/MWh energy sale price after dark 11:18 - CLAIM: $175k/year revenue from each satellite & launch costs 11:58 - CLAIM: 200W/sqm? Err, in what universe? 12:24 - DaveCAD calculations 13:10 - 100kW maximum capture is reduced by the tilt angle 14:05 - 5mW/sqm. FIVE MILLIWATTS! Is this a JOKE? 14:50 - But WAIT, what if you combine and focus all the satellites? 16:02 - It gets WORSE! Capacity Factor is a problem. 18:14 - 20MWh/year WOW!, that's a lot, right? Right? 19:22 - Even 20MWh/year become ZERO if it consumes more than it produces! 20:09 - How did nobody do a back-of-the-envelope calculation?
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00:00 - The Ultimate Beginners Guide to Multimeters 00:35 - Display Counts Explained 01:17 - Range Switch or Push Button? 01:43 - Don't get a rechargable type or permanent backlight 02:05 - Autoranging vs Manual Ranging 03:05 - Multimeter Probes 03:36 - Rubber Holster vs Overmoulded Rubber 03:50 - Battery powered & Auto Power Off 04:06 - What can a Multimeter Measure? Voltage, Resistance and Current 04:55 - Do you need Current measurement? 05:38 - Capacitance & Continuity 06:39 - Continuity Testing Demonstrated 07:08 - Diode and LED testing 07:59 - Thermocouple Temperature Measurement 08:37 - Non-Contact Electric Field (NCV) Testing 08:57- Frequency, Duty Cycle, and Min/Max/Avg 09:18 - True RMS vs Average Responding 10:13 - Practical usage demonstrated 10:47 - Modern Multimeters are very robust 11:10 - Here is where it gets dangerous, current measurement. 12:55 - CAT Safety rating and fuses 14:23 - UL and ETL Testing Certification 14:43 - BEWARE of Battery LEAKAGE! 15:00 - Don't measure Ohms in-circuit 15:43 - Auto Touch Hold 16:17 - DC Voltage Measurements 17:35 - AC Voltage Measurement 18:08 - Current measurement demonstrated 19:50 - Capacitance measurements demonstrated 21:20 - Ohms cable measurement 22:07 - Manual ranging demonstrated 23:02 - Bargraph function 23:45 - Conclusion and Recommendations
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #MailbageevBLAB 120 - DCS sues Youtuber for Defamation! - Threatens entire review industryEEVblog2024-08-09 | A small Australian company called Deep Cycle Systems (DCS) is suing Youtuber Stephan Fischer from AllOffroad 4x4 Adventures for defamation for (IMO) an honest multi-year battery review and documenting other users experiences with DCS LFP batteries in their 4x4 vehicles. If DCS win this insane lawsuit it will be a threat to the entire review industry, everyone will lose. Disclaimer: This is obviously my personal opinion on an important industry news event. I make no claims about DCS batteries, I have not used them or tested them.
The Australian government have tested DCS LFP home storage batteries: https://arena.gov.au/projects/testing-the-performance-of-lithium-ion-batteries/ Report is here: https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf
There is some precedent for defamation by companies against individuals in Australia: https://www.austlii.edu.au/au/journals/CommsLawB/2020/14.pdf https://gclegal.com.au/limelight-newsletters/defaming-through-google-reviews/ Defamation act 2005: https://legislation.nsw.gov.au/view/whole/html/inforce/current/act-2005-077 The battery capacity tester discussed: https://www.amazon.com.au/MakerHawk-Adjustable-Electronic-Intelligent-Resistance/dp/B07F3NHHST
Deep Cycle System website: https://www.deepcyclesystems.com.au/ https://www.deepcyclesystems.com.au/dcs-battery-tech/
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https://www.aerl.com.au/mppt-solar-charge-controller-history/ https://www.aerl.com.au/ AERL Life2 datasheet: https://www.aerl.com.au/wp-content/uploads/2024/05/AERL_LiFe2_Datasheet_REV_004.pdf Deye manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf Australian Standard for Home Battery Installations: https://store.standards.org.au/product/as-nzs-5139-2019 LG Battery recall: lgessbattery.com/au/recall/recallnotice.lg
00:00 - AERL Life2 LFP Home storage battery installation 01:08 - Pre-wired 19" battery storage rack 03:23 - 4AWG cables, quick-connects and bus bar 05:03 - The old EEVblog garage lab! 05:19 - Rate my Home Assistant RPi setup 05:43 - Peter Wilkinson from AERL 06:21 - The first patented MPPT from 1984 07:49 - LFP battery management PCB 08:14 - The 5.1kWh Life2 LiFePo4 LFP Battery 08:30 - LFP vs NMC fire risk and battery safety 10:16 - Is it safe and legal to install in the gargage? 11:03 - The 19" battery rack 11:51 - How does the battery talk to the Deye hybid inverter? 12:42 - Feed-in tarrifs and battery viability 13:25 - Should you 100% cycle an LFP battery? And self managed batteries. 16:01 - Do the batteries load balance? 16:56 - Installation! (+ extra solar installer FAIL) 18:48 - The 35mm cable and crimping 20:59 - Wiring up the battery cabinet 21:48 - Installing the batteries in the rack 22:31 - First power-up smoke test 23:02 - Connecting the other batteries 24:55 - Re-connecting the grid 26:07 - The next day... 27:32 - How does the Deye inverter know about the Enphase Micro Inverters? 29:21 - Big load testing with the EV, oven, and aircon 31:17 - Conclusion
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Solar #BatteryeevBLAB 119 - The History of the EEVBlog Hand PhotoEEVblog2024-08-07 | The history of the infamous EEVblog "Hand" photo/logo. It involves German Forth compilers, ocean bottom seismic exploration, and lack of a camera culture.
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00:00 - WAVJA Photon Energy System on Hack-a-Day 01:18 - The patent: Reflecting light, where have we seen this before? 02:47 - It uses NMC? 04:03 - This sucker can power an EV 05:05 - The patent is just scientific word salad... 06:23 - "Stimulation Current" of 40Ah, HUH? 07:52 - It's not Over Unity, but it's totally Over-Unity 08:42 - 300kW Balls! 10:06 - 3D Printed using WHAT? 11:34 - How is it not an Integrating Sphere? And how does the energy get out? 15:58 - 100MW is a very conserative estimate! 17:39 - Isn't patenting over-unity not allowed? 18:37 - A 60mm sphere can generate 300kW of electricity in ONE SECOND! 19:24 - Tested with a laser power meter? HUH? 20:33 - It's got AI, trust me bro. 21:02 - UNLIMITED POWER! and transparent mirrors... 23:21 - Where is all this in the demo? 24:31 - Why do they have half balls?
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00:00 - WAVJA Photon Energy System on Hack-a-Day 01:51 - This looks totally legit, so I BUILT MY OWN! The Photon Irradiance Solar System 04:15 - My balls work in near darkness! And produce 5 TIMES the power as WAVJA! 05:43 - What's that you can smell? 06:52 - It's got AI? 06:31 - Let's watch the video and the claims made... 07:16 - Does it generate or absorb luminosity? It's a tad confusing... 08:10 - 30 times smaller and 7.5x the output of solar panels! 08:57 - Capturing solar power is all about the Capture Area, dummy! 09:44 - It captures light and then WHAT? 10:43 - It's Over-Unity BS! 11:39 - It's got storage? 24 hour operation ! 12:59 - Their test setup and "power meter" results are demonstable BS! 16:12 - Roughly 0.1W per ball, SO revolutionary! 16:25 - The "charge" just comes from a commercial power bank, LOL! They have NOTHING! 16:25 - Only 3000 hours to charge your Electric Truck battery pack 17:05 - It gets MORE RIDICULOUS! Flying cars, shipping container drones, electric trucks! 18:47 - The Patent & the Founders 19:59 - Where does the light go? I'm confused... 20:41 - Conclusion 21:57 - I'm GIVING AWAY my P.I.S.S Technology!
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Debunking #SolarEEVblog 1632 - WHY sell 2CH Oscilloscopes? + Test EngineeringEEVblog2024-07-28 | Why do companies still sell 2CH oscilloscopes? Plus a massive tangent into test and production engineering showing one of my old test engineering projects.
00:00 - Why do companies still sell 2CH Oscilloscopes? 02:50 - Price Point, obviously? Education? 05:19 - Test & Production Egnineering 07:30 - 19" Rack mount Oscilloscopes 09:13 - Headless Low Profile Oscilloscopes 12:30 - Side benefits to end of production contracts... 13:03 - PXI Oscilloscopes 14:15 - Development time vs budget... 15:22 - R&D Time costs money 17:09 - Test Engienering & Linus Tech Tips test rack example 20:10 - Off-the-shelf vs Fully Custom 21:25 - One of my old test engineering products, a custom LCR / IR meter
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #oscilloscope #testEEVblog 1631 - $230 Micsig MDP700 HV Differential Probe ReviewEEVblog2024-07-20 | $230 Micsig MDP700 High Voltage Differential probe review and comparison with the older DP10007 and the EEVblog HVP70 probe. Have Micsig fixed the CMRR issue that plauged the DP10007 design? https://s.click.aliexpress.com/e/_DnNvolN
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #MicSig #ReviewEEVblog 1630 - Solar Panels for Water Pre-Heating?EEVblog2024-07-15 | Is it worthwhile to run water through your rooftop solar panels to cool them down while pre-heating your hot water? Or maybe heating your pool? Also solar air and water heaters. As always, YMMV, but this is why I didn't do it. Answering a Twitter question: https://x.com/axion2003/status/1812740667367460971
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T-Shirts: http://teespring.com/stores/eevblog #Hotwater #HeatPump #SolarpowerEEVblog 1629 - Dumpster Find: A3 Colour Photocopier!EEVblog2024-07-13 | A Konika Minolta bizhub C284e A3 colour photocopier found in the dumpster. Enjoy Dave's embarrassment at the redundant teardown. Ebay listing for original modern art print: https://www.ebay.com.au/itm/226241082176
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #DumpsterDivingEEVblog 1628 - Home Solar Power Re-Install + Upgrade + FAILEEVblog2024-07-06 | Reinstallation of the 5kW Enphase microinverter home solar power system, and installation of a new 5kW Deye Hybrid inverter string system did not go well...
Deye user manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf
00:00 - New Trina, old LG, and even older LG panels 03:44 - Salute the old Sunnyboy 3kW string inverter 05:23 - New 415W Trina, old 370W LG, and even older 250W LG panels. Plus some bonus 440W Trina panels. 06:45 - The old fuse box 10:00 - Roof racking installation 14:49 - Old 370W LG panels are getting reused 16:36 - Panel installation on the roof 20:46 - Timelapse 21:35 - New 5kW Deye Hybrid inverter installation has problems... 24:35 - And now the Solar Analytics system fails! 25:56 - I got it working! 30:30 - The Electrician with no Multimeter! 31:02 - Solar Assistant running on a Raspberry Pi 3 33:51 - Summary of the dodgy half and half pizza install 35:28 - Update on the various monitoring systems, Enphase, Solar Analytics, and MyEnergi Zappi
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #solarpowerEEVblog 1627 - Electronex: Engineering Consulting with XentronicsEEVblog2024-07-01 | A talk with Scott Williams from Xentronics at the Electronex show about freelancing and running an electronics design consultancy business. https://xentronics.com.au/
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Engineering #consultingEEVblog1626 - YOU HAD ONE JOB! (Solar Power Install FAIL)EEVblog2024-06-27 | My solar power installer HAD ONE JOB but FAILED. A short story. LOL along as they attempt to reinstall and commision my Enphase microinverter solar power system. Aircon Install FAIL video: youtube.com/watch?v=XD5Emhqd5Ks
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #solarpower #EnphaseEEVblog 1625 - Electronex: Scope Wars: The Rise of Uni-TEEVblog2024-06-26 | Uni-T are making a surprising move into the mid end instrument market with some custom ASIC based oscilloscopes, spectrum analysers, signal generators and a bunch of other instruments. A talk with Mark Isherwood from Rapid-Tech, the Australian dealer for Uni-T. https://rapid-tech.com.au/uni-t-instruments/
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Electronex #oscilloscopeEEVblog 1624 - Electronex: Liquid Instruments Moku OscilloscopeEEVblog2024-06-25 | An interview at the Liquid Instruments stand at Electronex 2024 about the Moku range of multi-function mixed signal oscilloscope, designed and built in Australia! Thanks to Ben Price for answering the questions even though he's the mechnical engineer! liquidinstruments.com
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Australia #oscilloscopeEEVblog 1623 - Electronex 2024 WalkthroughEEVblog2024-06-19 | Walkthrough of the 2024 Electronex trade show in Sydney.
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Electronex #walkthroughEEVblog 1622 - The BIG BEGINNER MISTAKE with MultimetersEEVblog2024-06-16 | This is the biggest mistake beginners often make when using a multimeter ohms function. A customer returned an EEVblog BM235 multimeter because it was "Faulty" Was it? Let's find out what happens when you try and measuse a CAN bus with a multimeter.
00:00 - Don't measure a CAN bus with a multimeter! 01:50 - Trying different multimeters 05:21 - Oscilloscope CAN bus measurement 06:30 - BEWARE measuring resistors in-circuit 08:16 - Power supply voltage example
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #MailbagEEVblog 1620 - Deye Solar Hybrid Inverter EXTREME TEARDOWNEEVblog2024-06-05 | Extreme teardown of the Deye SUN-5K-SG04LP1 5kW hybrid solar inverter. Will it contain the quality components claimed? Also a topology reverse engineering of all the stages.
UPDATE: Deye have responded and asked me to make this post:
"As an employee of Deye in Australia, I would like to address this issue with complete transparency. Deye, as a globally leading manufacturer of energy storage inverters, has always been committed to providing our customers with cost-effective and high-quality products. Our product failure rates are relatively low compared to our peers in the industry.
During the past couple of years, the pandemic caused significant supply chain challenges, making it difficult to procure certain components while the demand for energy storage solutions surged. To ensure continuous product supply, we had to use alternative components. Please rest assured that all these alternative components are A-grade and have undergone rigorous testing to meet industry standards and certification requirements.
The inconsistency between the components in our products and those mentioned in our catalog is due to our failure to update the catalog (2022-2023 Version)in a timely manner. We sincerely apologize for this oversight. We have taken immediate steps to rectify this and will update our catalog as soon as possible._ "
00:00 - A generous and coincidental donation from a viewer 00:37 - We have the brochure, let's check the claims! 02:44 - Front panel PCB 03:46 - The gigantic heatsink 04:44 - Nippon Chemi-Con Capacitors? REALLY? 05:54 - Heatsunk and potted inductors and transformer teardown 10:19 - Main PCB's and the confusing layout 12:53 - The fused battery input 13:37 - Are the MOSFET's and IGBT's as advertised? 15:10 - SMD high current links for PnP benefits 16:14 - Detailed circuit topology schematic reverse engineering 18:29 - Earth connection testing 19:07 - MOSFET vs IGBT 19:51 - Grid side IGBT switching and tri-level switching 20:46 - Solar Panels are capacitors to earth and that screws the CMRR 21:34 - HERIC switching topology and patent lawsuits! 23:50 - Grid and Load connections 25:07 - The battery bidirectional DC-DC converter 28:14 - H-Bridge and parallelism 30:14 - Switching drive stages 31:25 - Main processor PCB and a TI DSP ripoff? 32:51 - Redundant backup DSP controller? 34:40 - Genrator and Load conection relay switching 35:49 - Panasonic Relays? WHERE? 37:02 - User Connection PCB 38:25 - Conclusion
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #solarinverter #TeardownEEVblog 1619 - Mailbag: Featuring Don McKenzieEEVblog2024-05-28 | More Mailbag!
00:00 - THE Don McKenzie! and a bonanza of embedded history dontronics.com/jump-list.html dontronics.com/First-pc.html 08:44- PBUFF prototype 18:38 - Photon, the world's longest battery life camera (Open Source) https://toaster.llc/photon/index.html 29:19 - Sanyo ICC-811 Mini Calculator from 1972 37:33 - Japanese Gadgets: USB to Bluetooth converter + USB Cable Tester bit-trade-one.co.jp 43:28 - Professional Electronic Design Best Practices Book amzn.to/3R3oV6a 51:08 - Hoppes Brain MT-200 package adapter hoppesbrain.com
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #MailbagEEVblog 1618 - The Equation For Energy In A CapacitorEEVblog2024-05-22 | How To Derive The Equation For Energy In A Capacitor, E = 1/2 C.V²
NOTE: Re-edited from an old impromptu video to remove all unrelated stuff about the dumpster whiteboard I found.
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00:00 - Custom architectural LED wall wash lights 01:27 - Dual sided aluminimum profile 03:45 - 19W/m LED strip 06:08 - 32W/m LED strip 08:20 - Thermal adhesive backing 08:53 - EcoLamp LED Drivers 10:36 - Cable manage the design for replacement 12:30 - Testing 13:10 - LED strip analysis under the microscope 15:04 - Bench testing and verifiying the 19W/m spec 17:28 - Finding the SMD LED constant current driver chip 21:56 - Found it, the Crosschip DS-INK1101 24:47 - Bench testing and verifiying the 32W/m spec 26:52 - Bench testing the dimming 30:09 - Testing the driver adjustable dimming with external input
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00:00 - Unboxing the Weller Zero Smog EL kit 04:52 - Teardown 10:53 - Soldering test 13:44 - Side view soldering test
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Review #SolderingEEVblog 1615 - Dumpster Dive HP Pro One PCEEVblog2024-05-15 | It's been slim pickings in the dumpster room in recent times, will this HP Pro One 400 all-in-one touch screen PC be a winner?
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #dumpsterdiving #HPEEVblog 1614 - Circuit Design TIP: Crystal OscillatorsEEVblog2024-05-11 | You can easily replace any chip crystal circuit with a dedicated external crystal oscillator. Reducing your BOM count, and making your design easier, smaller, and potentially more robust.
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreatorseevBLAB 118 - NEW Apple iPad Pro: Volumetric Engineering vs MarketingEEVblog2024-05-08 | Apple just released the new iPad Pro M4. Normally I wouldn't care, but it's about Engineering vs Marketing, and we can run some numbers, so let's dive in. What can engineers do with an extra mm in thickness? How about double the battery capcity? Better repairability would have been nice too! Featuring DaveCalc.
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Apple #iPadProEEVblog 1613 - Audiophile REPAIR: $4500 Chord Hugo DACEEVblog2024-05-03 | Simple repair on the neighbours $4500 Audiophile Chord Hugo DAC. Replacing the rechargeable lithium ion batteries wasn't quite as simple as expected though... And is this thing worth $4500?
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Repair #audioEEVblog 1612 - Siglent SDS1000X HD 12 bit Oscilloscope TeardownEEVblog2024-04-27 | Siglent SDS1000X HD 12 bit Oscilloscope Teardown and brief play, noise measurement, and comparison to the SDS2000X HD
00:00 - Siglent SDS1204X HD 12 bit Oscilloscope 00:39 - Unboxing problem... 01:21 - For the film afficionardoes 01:31 - Brief look over 04:33 - Comparison to SDS2000X HD 05:17 - Teardown 07:26 - PSU differences 09:17 - Main PCB comparison to 2000X HD 12:35 - Front End comparison 14:56 - Cooling 15:15 - Front End Tweak function looks SCARY... 16:25 - There is no Manual memory depth setting 18:02 - ZERO BNC microphonics! 19:13 - Noise measurement
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Siglent #TeardownEEVblog 1611 - Top 5 Jellybean 7400 & 4000 LogicEEVblog2024-04-20 | The TOP 5 Jellybean 7440 and 4000 series logic chips.
00:00 - Top 5 TTL and CMOS Jellybean chips 00:37 - Different 7400 series family types 01:52 - What makes a Jellybean component 03:27 - CD4051 / CD4052 / CD4053 Analog Multiplexer Switch 17:42 - 74HC595 8 Bit Latched Shift Register 20:58 - Used in the MXO4 oscilloscope 24:09 - Driving LED's 26:12 - 74HC74 Dual D Flip Flop 27:00 - Used in the Rigol HDO1000 Oscilloscope 28:14 - Uses for a D Flip Flop 28:53 - Special Mention 74HC374/ 74HC574 30:35 - 74HC14 Hex Schmitt Trigger Inverter 35:18 - Last chip, what about NAND NOR or XOR? 36:06 - 74HC245
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #top5 #tutorialEEVblog 1610 - Deye 5kW Hybrid Solar InverterEEVblog2024-04-14 | A look at the Deye 5kW Hybrid Solar Inverter and attempted teardown. SUN-5K-SG04LP1-AU
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Deye #solarEEVblog 1609 - Composite Amplifier Tutorial + Practical DemoEEVblog2024-04-10 | A lot of texbooks don't teach Composite Amplifiers, but they are one of the most used circuit configurations to solve real world design poblems where you have multiple conflicting specifications.
00:00 - Composite vs Compound Amplifiers 02:53 - How a Composite Amplifier works 05:09 - Why not just cascade them? 07:23 - This doesn't just apply to opamps 08:24 - An example with gain, and another way to look at it 09:37 - Composite gain vs stage gain 11:19 - What's the catch? + rule of thumb for stability 12:42 - Another example: Composite precision high bandwidth amplifier 14:50 - Breadboard demonstration of Composite vs Compound amplfiers 19:09 - Changing to Composite configuration and Magic Happens 20:07 - More magic as it compensates for the buffer drop too
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreatorsEEVblog 1607 - PSU Switching Noise Reduction via VibrationEEVblog2024-03-31 | Physically vibrating your power supply at a sub harmonic of your PSU switching frequency can potentially lower your system noise. A practical demonstration. AlienTek DP100: https://s.click.aliexpress.com/e/_DeWCLIN
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00:00 - AlienTek DP100 100W USB-C PSU Unboxing 02:43 - Power on and operation 08:57 - User Manual 10:01 - Trying USB-C source 10:44 - Setting Menu 12:00 - uSupply Inception 12:55 - Physical size comparison 13:16 - Teardown 14:44 - PCB Inspection and design analysis 18:14 - BOM Consolidation & MOSFET's 19:15 - USB Power Delivery Chip 20:46 - MP9928 Buck Converter & PWM Current Limiting 23:37 - Zero drift opamps 24:14 - Processor 24:52 - Connector LED lighting 26:09 - Housing 26:39 - DC input testing 27:28 - Output noise measurement 28:57 - Classic Dave GOOF 29:57 - USB-A vs USB-C input noise 31:37 - Voltage Accuracy test 32:11 - Real noise measurements 33:08 - MAGIC SMOKE! 34:12 - Max 100W load testing 35:45 - Overshoot and CV/CC mode change testing 37:35 - Conclusion
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Review #PowerSupplyEEVblog 1605 - JBL Charge Speaker REPAIREEVblog2024-03-14 | Dave is chasing fart noises in this JBL Charge 3 waterproof speaker. A teardown, and powerup on the bench to find the mysterious fart noises. Will it get repaired, or will the fault do a Harold Holt? Part 2: youtube.com/watch?v=u7sVGnrf0P0
00:00 - JBL Charge 3 Waterproof Speaker Fault 02:17 - Teardown 07:13 - Drivers 08:16 - Passive Radiators 09:58 - The Case Moulding 10:46 - Main PCB 11:36 - Under the microscope 15:30 - What's this Power Rail doing? 18:07 - Power Rail Capture 20:16 - Are we chasing a red herring down a rabbit hole? 20:56 - Trying to capture the fault: Oscilloscope vs Microphone 22:22 - The Fault has done a Harold Holt
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #repair #JBLEEVblog 1604 - BEWARE! Multimeter Burden VoltageEEVblog2024-03-05 | Burden Voltage is a BIG trap with Multimeters, don't get caught out! A short video demonstrating the impact of Burden Voltage / Shunt Resistance on current measurement.
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreators #Multimeter #tutorialEEVblog 1603 - Colas Wattway Solar Roadways is DEADEEVblog2024-03-04 | The 1km Colas Wattway Solar Roadway in Normandy in France is finally being scrapped. Press F in the chat. €5M of taxpayer money down the drain. That money could have bought a 5MW commercial solar farm that produced 15 times the output power, and lasted decades longer.
00:00 - Colas Wattway Solar Roadways is DEAD 07:47 - Not even the biggest road construction company can make Solar Roadways work 08:32 - Even Colas admit it's a failed concept 10:13 - How may homes can it power? 11:29 - How big a solar farm can you buy for €5M ? 13:16 - One final walk down the biggest solar roadway in the world 16:37 - What ever happened to Solar Freak'n Roadways?
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T-Shirts: http://teespring.com/stores/eevblog #ElectronicsCreatorsEEVblog 1602 - Sony Amplifier REPAIR ADVENTUREEEVblog2024-02-29 | Repair of a Sony HCD-SBT20B Bluetooth Stereo. What it's like to nail the repair and then, well come-a-gutsa and have to go down the rabbit hole to fix the fix all whilst battling bad design info.
00:00 - Sony HCD-SBT20B Bluetooth Stereo with a water ingress problem 01:17 - Water isn't that bad actually, even mud. 02:49 - Comically long screwdriver time 04:09 - Vacuum Fluorescent display for all you VFD fanboys 05:10 - Annoying construction 06:14 - Logic level problem? Doesn't seem to be the PSU. 07:57 - Yuck! 09:58 - PCB Cleaning time 12:11 - Did the cleaning work? 13:28 - Hang on, I think I see something... 14:36 - More corrosion 15:21 - Back to measuring voltages on the VFD 17:15 - Handy use of Auto Hold 18:00 - VFD dispaly under the microscope 19:33 - Cathode measurement 20:13 - Anode connection tracing 22:10 - I wouldn't have designed it like this 23:08 - Sanity check 24:32 - What's in the can? 28:16 - Schematic time. Sony service manuals are something else 33:22 - Don't come-a-gutsa on dual diode pinouts 35:16 - Let's power it up on the bench 37:19 - There's something very strange about this... 40:04 - Oh FFS! 42:03 - Now it'll work...
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If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog Or with crypto: BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4 USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF Web Site: http://www.eevblog.com Store: https://eevblog.store/