EEVblog

Dave shows how to upgrade an Agilent/Keysight 6643A/6642A/6641A system dc power supply to have front panel binding posts. Sense lines are added to improve the high current accuracy. Operation Manual HERE Service Manual + Schematic HERE Auction Score video HERE Forum HERE Podcast: Download

Teardown Tuesday. Inside a Polar Wearlink chest strap fitness heart rate monitor monitor transmitter. Also a look at and some attempted decoding of the signal with the Tektronix MDO3000 oscilloscope. Polar RMCM-01 Receiver Module Datasheet Forum HERE Podcast: Download

Dave plays around with an energy harvesting kit to see how much power he can get out of a Peltier device used as a Seeback effect module to generate power from temperature differentials. Bonus white board tutorial on how Peltier devices work as heat pumps. Wuerth Elektronik Energy Harvesting Kit …

Teardown Tuesday Inside a 1973 vintage programmable scientific desktop calculator. The P2102 is a 1K x 1 bit SRAM, so looks like a 4 bit processor architecture. Forum: http://www.eevblog.com/forum/blog/eevblog-663-compucorp-322g-calculator-teardown/ Teardown photos: Podcast: Download

In this tutorial Dave demonstrates the seldom used and often little understood mathematical integration function available on your modern digital oscilloscope. And demonstrates a practical example use for it in accurately measuring the total power consumption of a microcontroller that sleeps and then wakes up and does some processing before …