EEVblog No Script, No Fear, All Opinion

Nobody truly understands the complexity of modern supply chains for the technology we take for granted. How the AI supply chain works, from ChatGPT to sugercane https://aisupplychain.vercel.app/ https://x.com/chiefofautism Forum: https://www.eevblog.com/forum/blog/eevblab-138-you-dont-understand-supply-chains!/ Podcast: Download

How to measure DC power rail high bandwidth waveforms with the offset control on your oscilloscope. Active Probes, Passive Probes, Z0 probes, and specific DC Power Rail Probes are compared. 00:00 – How to measure power rails with Active Probes and Power Rail probes 08:03 – Signal Skew 09:54 – …

The Uni-T UT892 High Voltage Multimeter is unusually rated to 2000V! Teardown and testing time, is it any good? 00:00 – Uni-T UT892 2000V High Voltage Multimeter 02:39 – Unboxing 03:40 – FAIL right off the bat! Probes matter. 05:53 – Teardown 08:06 – Where’s the MOV’s? 09:07 – The …

More mailbag! 00:00 – Vetus Pars Retro Chip Tester https://retrotroniks.com/product/vetus-pars-retro-chip-tester/ 17:05 – PRP1 2GHz Power Rail probe https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/ 22:07 – PRP1 Teardown 24:10 – PRP1 Circuit Explanation 27:08 – PRP1 Testing 32:09 – Comparison with Agilent 2GHz Active Probe Forum: https://www.eevblog.com/forum/blog/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/ Podcast: Download

How much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost? 00:00 – Panasonic electronic shaver teardown 06:30 – Battery dimensions match the type number 08:24 – The battery capacity test setup 10:40 – 500mA Constant Current test 11:38 – How much energy is left in a …

The $50 Ziboo 17B Pro 1500V Multimeter vs the $150 Fluke 17B MAX Is it any good? Forum: https://www.eevblog.com/forum/blog/eevblog-1731-$50-ziboo-17b-pro-multimeter-vs-$150-fluke-review/ Podcast: Download

Part 8 of the AC Basics tutorial series. Looking at the difference between Apparent, Reactive, and Real Power. Plus Power Factor 00:00 – Voltage & Current phase relationship 02:28 – Real Power 07:09 – Apparent Power 12:02 – Power transmission systems and copper losses 17:45 – Reactive Power 20:17 – …

Ohms law applied to AC. AC Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q- Forum: https://www.eevblog.com/forum/blog/eevblog-1729-ac-basics-tutorial-part-7-ac-ohms-law/ Podcast: Download

Part 6 of the AC basics tutorial video series, covering Impedance, Conductance, Susceptance, and Admittance. 00:00 – AC Tutorial Series Part 6 00:56 – Impedance 07:32 – Reactance vs Impedance 08:17 – Conductance 11:21 – The Fluke 87V measures conductance! 12:12 – Susceptance & Admittance 13:53 – Tying it all …

Simple repair of a Casio CT-X700 keyboard, with Sagan, and some really bad music. Forum: https://www.eevblog.com/forum/blog/eevblog-1727-repair-casio-ct-x700-keyboard/ Podcast: Download

Repairing a failed EV charger DC-DC converter had an unusual twist. Forum: https://www.eevblog.com/forum/blog/eevblog-1726-repair-of-an-ev-charger/ Podcast: Download

Sagan joins Dave to open more packages, in everyone’s favorite segment Mailbag. 00:00 – The Connector Book! by Davide Andrea https://connectorbook.com/ Listen to Davide on The Amp Hour: https://theamphour.com/708-all-the-connectors-with-davide-andrea/ 11:02 – BLE CaberQu USB-C cable tester https://caberqu.com 22:02- Teardown of the CaberQu 24:22 – Snaptron FREE Sample Box https://www.snaptron.com/free-samples/sample-box/ 24:55 …

Teardown of the classic Australian Made BWD 603B Minilab that was saved from the UTS dumpster. Schematic: Forum: https://www.eevblog.com/forum/blog/eevblog-1724-bwd-603b-minilab-retro-teardown/ Podcast: Download

Review of the AlienTek DM40 Multimeter/Oscilloscope 00:00 – Alientek DM40C Multimeter and Oscilloscope 02:12 – Unboxing 03:51 – What’s with the rotating tilting bail? 06:15 – Power on 08:53 – The Trend Chart is really nice 10:19 – Online/Offline mode, what IS this? 11:58 – Banana jacks please 12:07 – …

Re-telling of a manufacturing hardware war story talk I gave at a recent hardware meetup in Sydney. https://luma.com/Sydney-hardware-meetup?k=c How a simple manufacturing change cost a company millions of dollars. 00:00 – Sydney Hardware Meetup 01:16 – Seismic Oil Survey Exploration: How to find oil 03:29 – Seismic survey vessels are …