Posts on devices and electricity - anything that can spark - are collected here.

  • Analog ECG amplifier 29 April 2017

    Years ago, a team consisting of Renata Rycyk, Sylwia Krysiak, and myself implemented a simple design of a one-channel amplifier for electrocardiogram signals. I have posted our work to highlight the potential pitfalls...

  • Power supply efficiency calculator 26 June 2016

    How much power is your charger or adapter using?

    The true electrical efficiency of a power supply can only be determined by measuring the average input and output power over a period of time. Lacking...