Dave shows you how to setup, measure and generate an Efficiency vs Load Current characteristic curve for a DC-DC converter, just like you see in the datasheets. Several traps for young players are discussed, along with plotting Logarithmic axis charts in a spreadsheet. Electronic Load Kit: http://amzn.to/2i4cUdF BM235 Multimeter: http://amzn.to/2hJp78T Rigol PSU: http://amzn.to/2gZWkhw DIY Electronic Load video: https://www.youtube.com/watch?v=8xX2SVcItOA Forum: http://www.eevblog.com/forum/blog/eevblog-957-how-to-measure-dc-dc-converter-efficiency/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog

Dave attempts to trace a short "real-time" on the main board of the Lecroy 9384C oscilloscope. Teardown video is here: http://www.youtube.com/watch?v=96Wz6NIalC4 Forum Topic: http://www.eevblog.com/forum/blog/eevblog-398-lecroy-9384c-oscilloscope-repair/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

Thermal powered smartwates are nothing more than gimmicks. Dave runs the numbers on the Matrix Powerwatch from Indieigogo. Also some exercise testing shows up an unusual and undesired effect when using thermoelectric generators on your wrist. Thunderf00t's video: https://www.youtube.com/watch?v=zj3hJSlK3Nk Bluetooth Power Consumption Application Note: http://www.ti.com/lit/an/swra347a/swra347a.pdf The Peltier effect TEG used in the experiment: http://www.cui.com/product/resource/cp85.pdf The Wurth Energy Harvesting Kit: http://www.we-online.com/web/en/electronic_components/produkte_pb/demoboards/energy_harvesting/energy_harvesting.php Forum: http://www.eevblog.com/forum/blog/eevblog-945-thermal-powered-smartwatches-are-gimmicks/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog

What's inside Gossen Metrawatt's Metrahit Energy Multimeter?