Tutorials

All Tutorials

EEVblog 1508 – We FINALLY Got Alkaline Battery LEAKAGE!

After the 3+ year experiment that started in March 2019 we FINALLY have some alkaline battery leakage failures! Did the Duracell’s fail? That pesky potassium hydroxide forming potassium carbonate. Youtube: Battery leakage video playlist: https://www.youtube.com/playlist?list=PL24OiKqd2iN9n2Xk_7Y0gN5t44vtBud_C Forum: https://www.eevblog.com/forum/blog/eevblog-1508-we-finally-got-alkaline-battery-leakage!/ Podcast: Download

Read More »

EEVblog 1482 – Mains Capacitor Zener Regulator Circuit

A follow up to the previous video on repairing the heater. A viewer asked how the capacitor diode rectifier gave a 24V output. The key is in the zener regulator, so this vidoe looks at how mains powered zener voltage regulators work, and their limitations. X class capacitor and self ...

Read More »

EEVblog 1479 – Is Your Calculator WRONG?

Is your calculator WRONG? It could be! Looking at the issue of implied multiplication and how it can affect your calculations. Why do some Casio and TI calculators give a different result to others? And why do they differ from your phone calculator, google calculator, or Wolfram Alpha? How Order ...

Read More »

EEVblog 1475 – What’s This SMD Part?

Answering another viewer question. Can we identify or find an alternative for this SMD part? https://twitter.com/PoiSolutionsLLC/status/1529065036433571840 Forum: https://www.eevblog.com/forum/blog/eevblog-1475-smd-part-indentification-substitution-search/ Youtube: Odysee: Podcast: Download

Read More »

EEVblog 1472 – Resistor Cube Problem SOLVED

How to solve the resistor cube problem using equipotential nodes, short and open techniques, and circuit simplification. Twitter: https://twitter.com/engineers_feed/status/1519561534787051521 Forum: https://www.eevblog.com/forum/blog/eevblog-1472-resistor-cube-problem-solved/ 00:00 – The Resistor Cube problem 04:28 – The SECRET to circuit simplification using equipotential nodes 06:04 – Analysis “by inspection” 14:22 – Summary of the solution 16:14 – ...

Read More »