EEVblog No Script, No Fear, All Opinion

Patreon is an unsustainable business, in their own words. They took the investment money and now they are paying the price. It looks as though nothing Patreon can do that won’t piss off their creators will bring in enough money to keep the investors happy. In addition to the fallout …

What’s inside the Ericsson / LG IPECS PABX left behind in Dave’s new lab. Along with a Jabra Bluetooth headset Forum HERE Podcast: Download

What difference does a 4 layer PCB make to EMC radiated emissions compared to an identical 2 layer PCB? And why? Dave does H-Field near-field probe testing on two otherwise identical PCB’s. Electromagnetic waves and the difference between near field and far field, and H-Field and E-field probes and wave …

Some of the most commonly asked questions: How do you become a professional electronics engineer?Can you be a professional engineer without a degree?How do you get an engineering job or contract job? The different grade of engineering are also explained. Professional engineers, Engineering Technologists, and Associate Engineers. https://www.oregonlive.com/news/2018/12/federal-judge-finds-state-law-governing-who-is-an-engineer-violates-free-speech.html Forum HERE …

Teardowns of the Rohde & Schwarz HMP4040, HMP2020, and NGE103 programmable lab power supplies. Comparisons with other brand PSU’s: There are some comparisons with other brand PSUs https://www.rohde-schwarz.com/brochure-datasheet/hmp/ https://www.rohde-schwarz.com/au/product/hmp4000-productstartpage_63493-47360.html https://www.rohde-schwarz.com/au/product/nge100-productstartpage_63493-387267.html Forum HERE Podcast: Download

Rohde & Schwarz were offended at the quality of the power supplies in the EEVblog lab, so sent in some “real” lab power supplies! Unboxing and first look at the Rohde & Schwarz HMP4040, HMP2020, and NGE103 programmable lab power supplies. Comparisons with other brand PSU’s: There are some comparisons …

A follow-up to the Yihau/WEP SMD Station Meltdown, testing the heater drive TRIAC and looking at the brushless DC fan motor. And how a TRIAC and SCR works. DaveCAD github Forum HERE Podcast: Download

David2’s Yihau/WEP 898D+ SMD rework station literally melted down! Autopsy time. Forum HERE Podcast: Download

Mystery Teardown from the dumpster! Even Dave had no idea what this was until he tore it down. Patents VIDEO Forum HERE

How did you connect to a time sharing computer in 1972? Teardown of the Texas Instruments TI Silent 700 model 745 terminal with acoustic coupler modem. Forum HERE Podcast: Download

Dave scores a HP R1500 G3 rack mount Uninterruptible Power Supply (UPS) from the dumpster. Teardown time! Forum: http://www.eevblog.com/forum/blog/eevblog-1168-dumpster-diving-ups/ Podcast: Download

A quick chat about Innovation Patents vs Invention Patents for another video quickly turned into 30 minutes of general talk about patents, the patent system, patent applications, patent attorneys, over-unity free-energy quackery, the claims and examination process and a host of other stuff, with patent attorney Dr Phil Burns. Forum …

DejaVu. Dave revisits the new generation Cypres 2 parachute Automatic Activation Device and tears it down. A safety device that automatically activates your parachute at a pre-set altitude. It has saved over 4000 lives to date. Forum HERE Podcast: Download

A dual layer touch screen calculator watch in 1983? Amazing! Teardown of the rather obscure Casio TC-500 Forum HERE Podcast: Download

A retro look at the 2005 Xbox 14 million unit power cord replacement issue and a teardown and analysis of the supplied protection device from Microsoft. Some interesting engineering lessons to be learned. UPDATE: Apparently what this is an “Arc Fault Circuit Interrupter” (AFCI) that continually monitors the current for …