In the following animations, blue and red dots represent electrons and holes, respectively. White flashes indicate recombination events. In this first set of animations, the velocity of charge carriers is equal to the combined diffusion and drift currents divided by the total charge. Diffusion is not shown here.
NPN BJT
n-ch MOSFET
n-ch JFET
In the next set of animations, the carriers undergo diffusion and drift. This is the most accurate way of depicting charge carrier motion, but is also more visually confusing.
NPN BJT (w/ diffusion)
n-ch MOSFET (w/ diffusion)
n-ch JFET (w/ diffusion)
The final set of animations shows the currents and voltages at each terminal.
NPN BJT (w/ probes)
n-ch MOSFET (w/ probes)
n-ch JFET (w/ probes)
The animations on this page made by Brandon Li are licensed under CC BY 4.0.
