EEVblog

Were the Made in USA Energizer Max Plus AAA batteries in the previous leaking battery video FAKE? Dave found an identical genuine one and inspects and tears them down. Forum: https://www.eevblog.com/forum/blog/eevblog-1350-fake-energizer-batteries/msg3340976/#msg3340976

Dave caught a rare sight, an alkaline battery leakage in the potassium hydroxide liquid form before it had time to crystalise. This time in a Made in USA Energizer Max Plus AAA alkaline battery. Forum: https://www.eevblog.com/forum/blog/eevblog-1349-energizer-battery-leakage-made-in-usa/

A look at and teardown of the world’s first IBM PC compatible PC, the Compaq Portable. Also some meter and oscilloscope part 1 repair action… Forum: https://www.eevblog.com/forum/blog/eevblog-1348-worlds-first-ibm-compatible-pc-the-compaq-portable/

New SMD Thermal Jumper parts could radically change your PCB thermal designs! https://www.vishay.com/docs/60157/thjp.pdf https://atceramics.com/userFiles/uploads/pdfs/Q-BRIDGE.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1347-smd-thermal-jumpers-could-be-game-changing!/ This is a follow-on from the original SMD Thermal Design video: https://www.youtube.com/watch?v=2ygnAv6koSQ

Dave tears down and investigates a Dell infrared IR optical touch screen monitor found in the dumpster. Infrared touch screen are not often used in consumer computer monitor applications compared to resistive and capacitive touch screen technologies. Forum: https://www.eevblog.com/forum/blog/eevblog-1346-how-an-infrared-optical-touch-screen-works/

Dave fixes a thermal issue with his old video editing laptop, a HP Pavilion dv7 Forum: https://www.eevblog.com/forum/blog/eevblog-1345-hp-dv7-laptop-repair/

Custom storage shelves for under the bench in the new lab. Using an online flat pack custom shelving and storage ordering system, and assembly. Forum: https://www.eevblog.com/forum/blog/eevblog-1344-custom-lab-storage-shelves/

An update from EEVblog #50 (yes, #50!) The CREE XPG LED’s on the deck finally died and Dave needs a replacement, so time to hack some existing T8 LED tube lights. Forum: https://www.eevblog.com/forum/blog/eevblog-1343-dead-deck-cree-leds/

Symmetrical Dumpster PC Stacking, just like the Norwest mass turbulence of 1984. Dave’s been dumpster diving again for small form factor PC’s. Forum: https://www.eevblog.com/forum/blog/eevblog-1342-symmetrical-dumpster-pc-stacking/

Teardown of a $250,000 1991 vintage IBM 9121 TCM Processor module from a System/390 ES9000 Enterprise Server mainframe computer,. Amazing state of the art 63 layer ceramic hybrid module construction with 2772 pins! And Dave demonstrates an amazing BGA desoldering technique that can only be done on these ceramic hybrid PCB’s. TCM PDF: https://eevblog.com/files/ibm-system390-air-cooled-alumina-thermal-conduction-module.pdf Forum: ...

Dave explains why Tesla have switched from a 2170 cell to a bigger 4680 cell announced at Battery Day. What is the new tabless technology and what are the thermal cell and battery pack implications? Discussion on Lithium Ion battery cell construction, chemistry, manufacture, thermal design, internal resistance, heat sinking, and how cylindrical cells compare ...

A rubber coated Mailbag SPOILERS: 00:00 – Introduction 00:30 – Guest Lab RealTimeKodi https://twitter.com/RealTimeKodi 02:24 – Metrotech Model 480 Pipe & Cable Locator teardown, with interesting latex rubber conformal coating! 14:36 – KOTTO Soldering Fume Extractor https://amzn.to/32TlzKm 21:44 – William’s Lab 24:06 – Dr. Livingston’s Human Anatomy jigsaw puzzle set https://amzn.to/2ExXGic 27:11 – OPOLAR Cordless ...

Dave finally bought a fully electric car! A 2020 Hyundai IONIQ Electric Elite. A discussion about buying an electric car in Australia, comparison to the Nissan LEAF and others, and picking up the car. Forum: https://www.eevblog.com/forum/blog/eevblog-1337-i-bought-an-electric-car/

Destructive teardown o nthe Miniware DT71 LCR meter Tweezers Plus a lab move update. Forum: https://www.eevblog.com/forum/blog/eevblog-1336-dt71-lcr-tweezer-destructive-teardown-lab-update/

Review of the new $70 Miniware DT71 LCR Tweezers, is it any good? https://s.click.aliexpress.com/e/_dT6koqT Forum: https://www.eevblog.com/forum/blog/eevblog-1335-miniware-$70-dt71-lcr-tweezer-review/ TLDR; It’s not very accurate, doesn’t have much resolution, limited ranges, accuracy issues between Auto and Manual modes, can’t be used while charging, lose the custom charge lead and you are screwed, tilt head detection has a bit of ...