EEVblog No Script, No Fear, All Opinion

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 – …

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/ Podcast: Download

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 – …

An experiment to test an interesting effect with fuses. Forum: https://www.eevblog.com/forum/blog/eevblog-1677-an-interesting-effect-with-fuses-(experiment)/ Podcast: Download

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/ Podcast: Download

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 …

A big dumpster diving find! What did Dave score this time? Podcast: Download

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/ Podcast: Download

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 …

How can the same sh!t happen to the same guy twice? And a trap for young players with LCD’s. And a giveaway for the young whippersnapper in Australia. Forum: https://www.eevblog.com/forum/blog/eevblog-1670-bm786-multimeter-battery-leakage-repair-giveaway/ 00:00 – How can the same sh!t happen to the same guy twice? 06:27 – Zebra strip elastomeric connector 09:40 …

A mailbag replacement custom LED display for the Agilent U53131A VFD display frequency counter. www.hubequip.net Forum: https://www.eevblog.com/forum/blog/eevblog-1669-agilent-u53131a-vfd-to-led-display-upgrade-mailbag/ Podcast: Download

Horrific alkaline battery leakage in a rare prototype EEVblog 555 Multimeter. Can it be repaired? Forum: https://www.eevblog.com/forum/blog/eevblog-1668-horrific-alkaline-battery-leakage-in-rare-prototype-multimeter/ Podcast: Download

Reverse Engineering the Brymen BM2257 Multimeter front end to understand what changes have been made from the BM235 in the Low Z mode. DaveCAD time. Also some testing of the LowZ mode and how it works. Forum: https://www.eevblog.com/forum/blog/eevblog-1667-reverse-engineering-the-brymen-bm2257-multimeter/ MOV datasheet: https://www.cnr.com.tw/cloudSpace/CNR_D.pdf How to reverse engineer: https://www.youtube.com/watch?v=lJVrTV_BeGg Multimeter Input Protection: https://www.youtube.com/watch?v=zUhnGp5vh60 …

Let’s find out what this blown SMD part is, sent in by a viewer. Forum: https://www.eevblog.com/forum/blog/eevblog-1666-blown-smd-component-identification/ Component Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtdQF-m5UFZ5GEjABadI3kI Podcast: Download