The difference between Time Domain and Frequency Domain in AC circuit analysis. AC Theory Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHvD6M_7WeN071OVsZFE0_q- Forum: https://www.eevblog.com/forum/blog/eevblog-1661-ac-basics-tutorial-part-5-time-domain-vs-frequency-domain/
Part 4 in the AC basics tutorial series. AC applied to resistors, capacitors and inductors, along with Capacitive Reactance and Inductive reactance. AC Theory Playlist
Review of the new Quick 861 Pro hot air station compared to the original 861DW. Forum: https://www.eevblog.com/forum/blog/eevblog-1659-quick-861-pro-hot-air-station-review/
It’s important to understand the difference between Mean and Median, not just for engineering, but for everyday life, so you don’t get manipulated by people with bad intentions. UBS Global Wealth Report: https://www.ubs.com/content/dam/assets/wm/global/insights/doc/global-wealth-report.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1658-tutorial-mean-vs-median/
Almost 30 minutes of tearing down a Samsung 75″ QLED One Connect dumpster TV and trying to power it up to see if it’s busted or not. QA75Q7FNA 00:00 Dumpster Samsung QLED 75″ 04:46 – Teardown wasn’t easy as expected… 08:11 – What is this cable retention BS? 11:26 – I’m still at it… 14:22 …
More Mailbag! 00:00 – DPS Ultrathin DIN 5V PSU’s https://digitalpowersystems.eu/de/standard-produkte/ 01:15 – The Knife 06:16 – USB-C Isolator https://digitalpowersystems.eu/de/schnelle-und-sichere-usb-zu-uart-kommunikation-dank-digitaler-isolierung-und-esd-schutz-fur-ein-und-ausgange/ 07:34 – Zubax FluxGrip FG40 Electropermanent Magnet for Drones https://zubax.com/products/magnets/fluxgrip/fg40 11:55 – Testing the magnet 14:04 – Drone delivered multimeters? 14:53 – Why did someone send this? 15...
You can use almost any decent modern multimeter to safely discharge high voltage capacitor banks WITHOUT a LowZ function. Forum: https://www.eevblog.com/forum/blog/eevblog-1655-multimeter-tip-discharge-capacitors-using-any-meter/ Transistor Zener Clamp video: https://www.youtube.com/watch?v=BGcKjy_UNQ4
A full 3 hour discussion with the legendary Lee Felsenstein, designer of the Osborne 1, SOL computer, VDM-1, Pennywhistle modem, and the inventor of social media. Covering everything from the Berkeley free speech movement, the counterculture movement, his career, through to Obsorne and how he invented social media with Community Memory. His book: https://www.amazon.com/Me-My-Big-Ideas-Counterculture/dp/B0DJ8T45F1/ https://felsensigns.com/ …
Revisiting the alkaline battery leakage testing with a 555 circuit from a viewer. Forum: https://www.eevblog.com/forum/blog/eevblog-1653-alkaline-battery-leakage-testing-2-electric-boogaloo/ Final results of the first leakage testing: https://www.youtube.com/watch?v=BScnU4BT4xk
Why is my lab power switchboard wired like this? Forum: https://www.eevblog.com/forum/blog/eevblog-1652-why-is-my-lab-switchboard-wired-like-this/
I’m finally upgrading the infamous rats nest home switchboard! https://insightelectrical.com.au/ Forum: https://www.eevblog.com/forum/blog/eevblog-1651-home-electrical-switchboard-upgrade/ 00:00 – A look at the old switchboard 03:29 – Single Phase 04:57 – Surge protection 05:28 – Old school ceramic fuses 06:04 – Inside the infamous Rats Nest! 08:29 – Simon from Insight Electrical 09:09 – Could you still do wiring like …
Review of the Sequre HT-140 USB-C Desoldering Tweezers https://sequremall.com/collections/diy-tools/products/sequre-ht140-2in1-hot-tweezers-soldering-iron-desoldering-repair-tool-for-smd?variant=44204748275900 Forum: https://www.eevblog.com/forum/blog/eevblog-1650-sequre-ht-140-smd-desoldering-tweezers-review/
More mailbag! 00:00 – Everyones favourite segment! 01:00 – The very clever Edge Wedge from Metric Mind – Zero footprint programing header https://metricmind.com/ 05:19 – M5Stack Embedded processor modules https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit 11:28 – Err, the polarity is BACKWARDS! 12:41 – The M5stack website and UIflow2 GUI software 21:20 – Teardown of the M5stack Core2 module 23:16 …
USB Battery bank charger capacity explained. When you are comparing battery banks you want to use a measured Output Referred capacity figure, not an Input Referred mAh or Wh figure the manufacturers marketing department gives you. Forum: https://www.eevblog.com/forum/blog/eevblog-1648-input-vs-output-referred-battery-capacity-explained/
You might have thought the Rouute road based energy system was gone, but like a phoenix it has returned from the grifting ashes as R-2ENERGY! Sadly, Discount Morgan Freeman has been replaced by discount Joe Average https://www.r-2e.com/ https://find-and-update.company-information.service.gov.uk/company/11768960 https://www.linkedin.com/company/r-2energy/ Forum: https://www.eevblog.com/forum/blog/eevblog-1647-road-based-energy-again-rouute-vs-r-2energy/ The original video has the full debunk on w...
FixHub portable soldering station REVIEW https://www.ifixit.com/products/fixhub-power-series-portable-soldering-station Just the iron: https://www.ifixit.com/products/fixhub-power-series-smart-soldering-iron Schematic: https://www.ifixit.com/Document/MeQmLlLKT2LSSKFY/Portable-Power-Station-Electrical-Schematics.pdf Repair Guide: https://www.ifixit.com/Device/FixHub_Portable_Power_Station 3D Model: https://www.printables.com/model/1018125-fixhub-power-series-portable-power-station/ How intercreat...
Is the US$80 Quick TS11 80W Soldering station any good? SPOILER: Nope, it’s pretty terrible. Forum: https://www.eevblog.com/forum/blog/eevblog-1645-$80-quick-ts11-soldering-station-review/
More mailbag! 00:00 – Crowview Monitor & Keyboard https://www.elecrow.com/crowview-note-all-in-one-portable-monitor-phone-to-laptop-device-with-full-featured-type-c-sbcs-mini-pc-pc-game-console-compatibility.html 08:11 – Casio Border Army Game+Watch 11:34 – Minipa ET-1700 Pocket Multimeter 13:24 – Adafruit PCB Ruler 14:14 – PASS Card Game 15:13 – Crusty Raspberry Pi 17:40 – Sinusoid 4-20mA Rotary Encoder 29:29 – Wurkkos H1 USB Battery Bank 36:05 – Rulerize, transparent ruler sticker …
You get what you pay for in EV chargers. Don’t buy this super cheap New Energy brand 7kW 32A EVSE Charger. Does it even meet the IEC 62752 it claims on the label? Or the US UL 2231 standard? MIDA brand EVSE: https://www.youtube.com/watch?v=SrZgN_EuRGw
Can I resurrect my first digital multimeter? A Soar ME-533 Forum: https://www.eevblog.com/forum/blog/eevblog-1641-can-i-resurrect-my-first-digital-multimeter/ 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, …
