EEVblog No Script, No Fear, All Opinion

Mailbag time! Forum: https://www.eevblog.com/forum/blog/eevblog-1351-mailbag/ Mailbag bench images to: [email protected] SPOILERS: 00:00 – GPS Tracker Battery Leak 06:47 – Guest RF Lab – Chuck Kummer W7CLK 09:46 – Marklin HO scale railway turnout point 19:29 – GVDA GD118B Pocket Multimeter review https://s.click.aliexpress.com/e/_Ab3RNe 39:10 – GVDA GD116A AC Voltage Detection Stick review …

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 Podcast: Download

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/ Podcast: Download

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/ Podcast: Download

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 Podcast: Download

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/ Podcast: Download

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/ Podcast: Download

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/ Podcast: Download

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/ Podcast: Download

What’s left of the rented and now abandoned EEVblog Lab And why you may not see videos for a couple of weeks. Exclusive video on the lab move options: https://odysee.com/@eevblog:7/What’s-old-is-new-again.-The-Lab:4 More on the lab move: https://odysee.com/@eevblog:7/Update-28-3-2020-280×720:3

Two Japanese guys have been working for 30 years on a “Gavitational Power Generator” over-unity machine that produces 30-100 times the input energy. The Japanese Patent office disagrees in an hilarious Kickstarter own-goal! https://www.kickstarter.com/projects/sunteljp/the-gravitational-power-generator-eco-turbine/description Forum: https://www.eevblog.com/forum/eevblab/eevblab-82-kickstarter-over-unity-gravitational-power-generator!/

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/ Podcast: Download

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 …

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, …

Dave visits Transit Systems to take a look at a fully electric bus with a 328kWh battery back running on regular Sydney bus routes. How does it compare to an electric car? https://www.transitsystems.com.au/electric-buses Forum: https://www.eevblog.com/forum/blog/eevblog-1339-looking-at-an-electric-bus/