Dark current and transistors without a case In search of the perfect electric voltage What’s hidden inside a smart socket? What do you need to know about voltage converters? Compendium of knowledge about Nixie What is hidden inside the LED bulb? How does a transistor burn in a common emitter circuit? Please leave this field empty Want to stay up to date?Join the newsletter Sign up and receive notifications of new articles, tidbits and short notes describing what I am currently working on. Check your inbox or spam folder to confirm your subscription.