EEVblog
No Script, No Fear, All Opinion
Episodes
June 5, 2025 • 38 mins
More Mailbag! 00:00 – Zifnu K-16 Kickstarter LED light https://www.zifnu.com/ 11:02 – Qoool Sensing: Diamond Quantum Fluorescence Demo https://qoool-sensing.org 16:41 – Logic Gate Educational Demo Board https://logicgat.es/ 20:15 – Beelink ME Mini 6 x M.2 Slot Home Storage NAS https://www.bee-link.com/products/beelink-me-mini-n150?ref=OKJKQ Forum: https://www.eevblog.com/forum/blog/eevblog-1690-mailbag-zifnu-led-quantum-diamonds-lo...
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June 5, 2025 • 9 mins
Another Colour A3 photocopier in the dumpster! Is this an upgrade? Fuji-Xerox Docucentre V C4476 Forum: https://www.eevblog.com/forum/blog/eevblog-1689-another-dumpster-diving-a3-colour-photocopier/
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May 29, 2025 • 34 mins
DC Constant Current sources explained and demonstrated. Forum: https://www.eevblog.com/forum/blog/eevblog-1688-constant-current-sources-explained-demo/ Voltage and Current Source Theory: https://www.youtube.com/watch?v=AQK7RyecVW0 DC Circuit Fundamentals Playist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtVLq2MDPIz82BWMIZcuwhK 00:00 – Constant Current Sources 11:08 – Practical uses of constant current sources 14:00 – Circui...
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May 22, 2025 • 12 mins
The repair of alkaline battery leakage in this Keysight U1177A Bluetooth mulitmeter adapter was, well, pointless…. Forum: https://www.eevblog.com/forum/blog/eevblog-1687-a-pointless-alkaline-battery-leakage-repair-462018/
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May 20, 2025 • 50 mins
A complete walkaround of the Electronex 2025 exhibition in Melbourne Forum: https://www.eevblog.com/forum/blog/eevblog-1686-electronex-2025-melbourne-walkaround/
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May 13, 2025 • 53 mins
A walk around the Australian Manufacturing Week exhibition in Melbourne 2025, looking at mechanical stuff Dave has no idea about. Forum: https://www.eevblog.com/forum/blog/eevblog-1685-australian-manufacturing-week-2025-walkaround/
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Test Controller is an awesome free logging and control software that supports a ton of multimeters, power supplies and loads, including the new BM2257. https://lygte-info.dk/project/TestControllerIntro%20UK.html https://lygte-info.dk Forum: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
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May 8, 2025 • 33 mins
Sun-Ways actually went ahead and installed Solar Freakin’ RAILways in the Swiss village of Buttes at the cost of US$700,000 ! References: https://www.swissinfo.ch/eng/climate-change/switzerland-turns-train-tracks-into-solar-power-plants/89227914 https://www.swissinfo.ch/eng/science/swiss-solar-railway-project-gets-back-on-track/87707181 https://www.startupticker.ch/en/news/sun-ways-opens-world-s-first-rail-ready-track-mounted-solar...
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April 29, 2025 • 13 mins
One of my 14 Enphase microinverters failed and they sent me a new one under warranty, lets install it… Forum: https://www.eevblog.com/forum/blog/eevblog-1682-enphase-microinverter-fail-warranty-install/
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April 26, 2025 • 27 mins
More mailbag! 00:00 – A really really nice DIY Constant Current Load 07:55 – Whatever happened to sloped folded metal instrument cases? 08:46 – The amazing Stamp Breadboard Replacement prototype boards (Link coming soon) 13:35 – A look at the Stamp documentation 21:14 – Ian Scott Johnston’s Multimeter Continuity Speed Tester! https://www.youtube.com/@UCtiK8QrcCrsjDXpKzB1PO1A https://www.ianjohnston.com/ Forum: https://www.eevblog.c...
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April 16, 2025 • 16 mins
New research shows you can extract a tiny voltage and current from a stationary tube in the earth’s magnetic field. Is this real? It is scaleable to be useful? Paper: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.7.013285 IEEE article: https://spectrum.ieee.org/decarbonized-future Forum: https://www.eevblog.com/forum/blog/eevblog-1680-free-energy-from-the-earths-magnetic-field/
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April 16, 2025 • 41 mins
Why does the Uni-T UTG9504T abitary function generator cost US$5800? A teardown and detailed BOM cost analysis of how much high end product designs costs, and the margins involved. Forum: https://www.eevblog.com/forum/blog/eevblog-1679-why-does-this-uni-t-awg-cost-$5800-bom-cost-analysis-458562/ 00:00 – Why does this Arbitrary Waveform Generator cost US$5800 ? 02:17 – 2.5x BOM Cost multiplier 03:02 – Teardown 06:02 – Power Supply …
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April 11, 2025 • 53 mins
53 minutes single take randomly walking the streets of Sydney with Mehdi from ElectroBOOM. That is all. Forum: https://www.eevblog.com/forum/blog/electroboom-stalks-sydney/
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April 4, 2025 • 21 mins
Oscilloscope have a pre-arm trigger period that can cause confusion if you aren’t aware of it. And how different scopes operate and indicate this in different ways. Also some potential bugs in the Keysight 3000 and HD3 series scopes. 00:00 – Slow timebases can be problematic for triggering 02:13 – What happens when you press …
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March 31, 2025 • 13 mins
An experiment to test an interesting effect with fuses. Forum: https://www.eevblog.com/forum/blog/eevblog-1677-an-interesting-effect-with-fuses-(experiment)/
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March 31, 2025 • 16 mins
Modifying a lab timer to automatically trigger when a fuses blows, for automated fuse testing. Fuses video: https://www.youtube.com/watch?v=WG11rVcMOnY Jellybean Transistors: https://www.youtube.com/watch?v=XYdmX8w8xwI Forum: https://www.eevblog.com/forum/blog/eevblog-1676-lab-timer-hack/
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March 31, 2025 • 4 mins
Our Ninja blender blade failed. For a warranty replacement they wanted us to DESTROY and DISPOSE OF the old perfectly working base unit before sending a new one. Let’s see about that… The first ever EEVBlog video with zero commentary, just memes. My breakfast smoothie: https://www.youtube.com/shorts/-2mf1mqZVQ0 Forum: https://www.eevblog.com/forum/blog/eevblog-1675-ninja-blender-repair-because-why-(right-to-repair)/ Credits: “Our S...
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March 9, 2025 • 11 mins
A big dumpster diving find! What did Dave score this time?
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March 9, 2025 • 9 mins
A quick follow-up to the JBL Partybox 310 speaker repair and speculation on WHY the fault happened the way it happened. Contains SPOLIERS, so watch Part 1 first! Forum: https://www.eevblog.com/forum/blog/eevblog-1672-jbl-repair-youll-never-guess-the-fault/
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March 4, 2025 • 46 mins
Repair of a JBL Partybox 310 speaker. Follow along as Dave goes down the repair rabbit hole. Try and guess the exact fault before Dave does, it’s a doozy! 00:00 – JBL Partybox 310 Speaker fault symptoms and initial failure speculation 02:57 – Teardown 06:23 – Is it a firmware lockup issue? 07:17 – Checking …
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