USB Battery bank charger capacity explained. When you are comparing battery banks you want to use a measured Output Referred capacity figure, not an Input Referred mAh or Wh figure the manufacturers marketing department gives you. Forum: https://www.eevblog.com/forum/blog/eevblog-1648-input-vs-output-referred-battery-capacity-explained/ Podcast: Download
Read More »EEVblog 1618 – The Equation For Charge In A Capacitor
How To Derive The Equation For Charge In A Capacitor, E = 1/2 C.V² NOTE: Re-edited from an old impromptu video to remove all unrelated stuff about the dumpster whiteboard I found. Forum: https://www.eevblog.com/forum/blog/eevblog1618-how-to-derive-the-equation-for-charge-in-a-capacitor/ Podcast (podcast2): Download
Read More »EEVblog 1609 – Composite Amplifier Tutorial + Practical Demo
A lot of texbooks don’t teach Composite Amplifiers, but they are one of the most used circuit configurations to solve real world design poblems where you have multiple conflicting specifications. Opamp Tutorial Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf Cascaded Compound Amplifiers: https://www.youtube.com/watch?v=ZvT9hHG17tQ Forum: https://www.eevblog.com/forum/blog/eevblog-1609-composite-amplifier-tutorial-practical-demo/ 00:00 – Composite vs Compound Amplifiers 02:53 – How a …
Read More »EEVblog 1604 – BEWARE! Multimeter Burden Voltage
Burden Voltage is a BIG trap with Multimeters, don’t get caught out! A short video demonstrating the impact of Burden Voltage / Shunt Resistance on current measurement. Mutlimeter Shunt Tutorial Part1: https://www.youtube.com/watch?v=jx0dryLmUEQ Part 2: https://www.youtube.com/watch?v=xSEYPP5Xsi0 Forum: https://www.eevblog.com/forum/blog/eevblog-1604-beware-multimeter-burden-voltage/ Podcast: Download
Read More »EEVblog 1601 – How VFD (Vacuum Fluorescent) Displays Work
How VFD (Vacuum Fluorescent) Displays Work. Extracted from a hacking video #717: https://www.youtube.com/watch?v=clUVEyi_YNM Forum: https://www.eevblog.com/forum/blog/eevblog-1601-how-vfd-(vacuum-fluorescent)-displays-work/ Podcast: Download
Read More »