What is Mains Ripple Injection and control? A mystery bunker item teardown turned out to be a very interesting and obscure bit of test kit. Subscribe: http://www.eevblog.tv Forum: https://www.eevblog.com/forum/blog/eevblog-1283-what-is-mains-ripple-injection/ Podcast: Download
Read More »
How to design your own custom membrane keypad and get it manufactured, to make your products look really professional. It’s easier and cheaper than you think! Subscribe: http://www.eevblog.tv Forum: https://www.eevblog.com/forum/blog/eevblog-1282-design-your-own-membrane-keypad/ Podcast: Download
Read More »
Forum: https://www.eevblog.com/forum/blog/eevblog-1281-garmin-gps-repair/ Repair of a Garmin GPS unit, with characteristic Dave screw-up and Murphy. https://www.eevblog.tv Podcast: Download
Read More »
Dave upgrades the processor in the dumpster Lab recording PC to one from another dumpster PC. It’s dumpsters all the way down… Subscribe on LBRY: https://www.eevblog.tv Forum: https://www.eevblog.com/forum/blog/eevblog-1280-dumpster-lab-pc-upgrade/ Podcast: Download
Read More »
The best dumpster PC find yet! Some software hacking required to defeat Windows 10 security though. Subscribe on LBRY: https://eevblog.tv/ Forum: https://www.eevblog.com/forum/blog/eevblog-1279-best-dumpster-pc-find-yet!/ Podcast: Download
Read More »
The mailbag dregs from 2019. Dave opens every remaining package on the shelf! Forum: https://www.eevblog.com/forum/blog/eevblog-1278-mailbag/ SPOILERS: The Amp Hour: https://theamphour.com/ 1:40 Piggy MP3 Player Teardown 3:36 Sony Walkman & Grundig Cassette Player Teardowns 10:02 PCB Xmas Tree Card: https://www.instructables.com/id/PCB-Christmas-Tree-Card/ 13:56 Zodiac language translator 18:10 Engineers PCB Ruler: https://www.etsy.com/au/listing/730343326/engineers-pcb-ruler-for-engineers-makers 21:12 Mystery …
Read More »
Random Bunker dumpster item teardown. A 20 year old Australian designed and made electric fence controller. Repair guides are here: https://pakton.com.au/support.php Forum: https://www.eevblog.com/forum/blog/eevblog-1277-electric-fence-controller-teardown/ Podcast: Download
Read More »
Dave got his hands on a piece of the protective covering of the Solaroad in Krommenie in the Netherlands. How much light does it block? Subscribe on LBRY: https://lbry.tv/@eevblog:7 Thanks to Stop Solaroad: https://www.youtube.com/channel/UCRhclm-nzJ1PaE2XmjPcTog https://twitter.com/Stop_Solaroad Forum: https://www.eevblog.com/forum/blog/eevblog-1276-solar-roadways-surface-tested!/ Podcast: Download
Read More »
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/ Podcast: Download
Read More »
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/ Podcast: Download
Read More »
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/ Podcast: Download
Read More »
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 …
Read More »
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 …
Read More »
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 …
Read More »
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!/ Podcast: Download
Read More »
EEVblog No Script, No Fear, All Opinion
