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 an...
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 explaine...
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 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.
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
David2’s Yihau/WEP 898D+ SMD rework station literally melted down! Autopsy time. 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
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/
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,
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