EEVblog

How much has UHF technology progressed in 20 years? A teardown of a 2000 vintage Uniden 500mW UH040 UHF Walkie Talkie to a modern kids 500mW version at half the size and 1/10th the cost! Bonus UH750 5W teardown. Forum: https://www.eevblog.com/forum/blog/eevblog-1275-uniden-uhf-walkie-talkie-teardowns/

Testing 7 different brands of AA Alkaline batteries in two different configurations over 10 months to see if they leak. Duracell, Energizer, Varta, Panasonic, Fujitsu, HVP70 High Voltage Probe: https://www.eevblog.com/product/hvp70/ Subscribe on LBRY: https://lbry.tv/@eevblog:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1274-long-term-alkaline-battery-leakage-testing/

An explanation of near-field vs far-field in relation to EMC compliance testing. H-field magnetic probes vs e-field electric probes. Explanation extraction from video #1176 Wideband EMC log-periodic antenna: http://s.click.aliexpress.com/e/DQeIdwZ6 Near field probes: http://s.click.aliexpress.com/e/N5wdxeFQ Subscribe on LBRY: https://lbry.tv/@eevblog:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1273-emc-near-field-vs-far-field-explained/

More Mailbag! Subscribe to Dave on LBRY: https://lbry.tv/@eevblog:7 SPOILERS: Vintage Tek Scopes Group https://groups.io/g/TekScopes 2:57 8 Cent Touch Sensor Chip TTP223 from TonTek: https://lcsc.com/products/Touch-Screen-Controller-ICs_902.html?q=ttp223 http://www.tontek.com.tw/product/product2?lang=en&idx=42 9:08 DefPom’s new open source BOM tool MyPartsBin: https://mypartsbin.com/ https://www.youtube.com/user/TheDefpom Casio FX-730P Calculator 11:49 FREE Multimeters went to a good cause, and Amazon Returns 14:07 CB2 Micro Kit: http://cb2.qrp.gr/ 17:02 ...

A 100kW wind generator in only 7sqm? Less than 2% the size of traditional wind turbines! Basic physics and the whiteboard to the rescue! A look at the claims of the AmericanWind WindWall “turbine” wind power generator. http://americanwindinc.com/our-products-3/advanced-windwall/ And a Wind Power 101 tutorial on how wind turbine calculations work and pesky limitation of Betz’s ...

What is the best electronics textbook? A look at four very similar electronics device level texbooks: Conclusion is at 40:35 Electronic Devices by Floyd: https://amzn.to/2s4BSnK Electronic Principles by Malvino & Bates: https://amzn.to/2DX88f3 Microelectronic Circuits by Sedra & Smith: https://amzn.to/2s5nBXX Electronic Devices and Circuit Theory by Boylestad: https://amzn.to/33TF2rC Also: The Art of Electronics: https://amzn.to/2qv2j5pArt of Electronics ...

We have data from the new Solar Roadways SR4 installation, and it ain’t pretty! A comparison with a nearby installation of existing rooftop solar, and how much energy does it take to melt snow? Data from SR4: https://monitoringpublic.solaredge.com/solaredge-web/p/kiosk?guid=1e085701-ccb3-4ce5-b107-86e3b5e831dd&locale=en_US Article: https://www.bonnercountydailybee.com/local_news/20191130/solar_roadways_unveils_new_panels Forum: https://www.eevblog.com/forum/blog/eevblog-1269-solar-roadways-sr4-data-hilarity!/

Full tour around, under, and inside the world’s most expensive DIY Boeing 747-400 full motion flight simulator under construction. With Rod Redwin from Simulator Solutions:https://simulatorsolutions.com.au/ Forum: https://www.eevblog.com/forum/blog/eevblog-1268-diy-boeing-747-cockpit-simulator-full-tour/

How do you control the thousands of switches, sensors, actuators, bulbs and ARINC 429 bus devices in the world’s most expensive 747 flight simulator? Rod Redwin from Simulator Solutions explains the design on the I/O solution for such a mammoth task. https://simulatorsolutions.com.au/ Forum: https://www.eevblog.com/forum/blog/eevblog-1267-how-to-control-a-747-flight-simulator/

How to measure switching noise on a power supply properly, because Dave completely goofed it in the Riden RD6006 PSU review video. http://s.click.aliexpress.com/e/DlHrJpFS All about coaxial cable impedance matching and compensation. Mysteries of x1 Oscilloscope Probes Revealed: LBRY: https://lbry.tv/@eevblog:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1266-psu-probing-screw-up/