EEVblog No Script, No Fear, All Opinion

A teardown of the Uni-T UTE 310 Digital Power Meter, and an example meausing the power consumption of the new Brymen BM786BT multimeter in bluetooth data transmission mode. https://uni-trendus.com/products/ute310-digital-power-meter Forum: https://www.eevblog.com/forum/blog/eevblog-1693-uni-t-ute310-power-meter-teardown-practical-demo/ 00:00 – Uni-T UTE310 Power Meter 02:44 – Teardown 06:54 – Power supply 07:47 – FPGA and ARM processors …

Is a US$130 Fluke multimeter any good? A review of the Fluke 17B MAX Multimeter Forum: https://www.eevblog.com/forum/blog/eevblog-1692-$130-fluke-17b-max-multimeter-review/ Why are Fluke meters so expensive: https://www.youtube.com/watch?v=ay9wFQAW19Y Fluke 17B multimeter teardown: https://www.youtube.com/watch?v=TbEtcpM0RGc Fluke vs Brymen Teardown: https://www.youtube.com/watch?v=3Hlmq57FQQk 00:00 – US$130 Fluke 17B MAX Multimeter 02:32 – Construction 04:52 – What’s in the (China …

The Uni-T UDP6700 series UDP6731 360W slimline Bench Lab Power Supply REVIEWED https://instruments.uni-trend.com/products/dc-power-supplies/UDP6700 https://uni-trendus.com/products/udp6731-360w-basic-dc-switching-power-supply-80v-15a 00:00 – Uni-T UDP6731 PSU 01:30 – Beware of thermal stacking 02:55 – Teardown 07:35 – Sneaky fan 11:24 – Remember the Riden RD6006, also 350W 13:10 – Power up 16:04 – The display and UI …

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-logic-gates-m-2-nas/ Podcast: Download

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/ Podcast: Download

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 – Circuit examples 19:13 – TL431 Example 20:25 – LM317 CC circuit 21:42 – Low Side …

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/ Podcast: Download

A complete walkaround of the Electronex 2025 exhibition in Melbourne Forum: https://www.eevblog.com/forum/blog/eevblog-1686-electronex-2025-melbourne-walkaround/ Podcast: Download

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/ Podcast: Download

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/ Podcast: Download

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-power-plant https://www.youtube.com/@sun-ways https://www.pv-magazine.com/2024/04/09/italian-startup-testing-pv-sleepers-on-railway-line/ https://pvwatts.nrel.gov/pvwatts.php Paper on railway dust: https://www.sciencedirect.com/science/article/pii/S004896971401451X?via%3Dihub https://pubmed.ncbi.nlm.nih.gov/25461038/ Forum: https://www.eevblog.com/forum/blog/eevblog-1683-sun-ways-solar-freakin-railways-part-2/ Part 1: https://www.youtube.com/watch?v=7vItnxhWRqw Podcast: Download

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/ Podcast: Download

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 …

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/ Podcast: Download

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 – …