fremstrøm
Fremstrøm, in electronics, is the electric current that flows through a semiconductor device when it is forward-biased, most commonly through diodes and LEDs. When a diode is forward-biased, the anode is at a higher potential than the cathode, reducing the built-in potential barrier and allowing charge carriers to cross the junction. This produces a rapid rise in current as voltage increases.
The current–voltage relationship for a forward-biased PN junction is approximately exponential, described by the diode equation
Forward current is controlled in circuits to prevent overheating and damage, usually with a resistor or current-regulating
The concept of fremstrøm is fundamental to rectification, switching, and lighting applications, and is contrasted with