Show HN: I made some transistor animations
A developer created detailed semiconductor animations demonstrating the internal physics of NPN BJT, n-channel MOSFET, and n-channel JFET transistors. The project visualizes charge carrier dynamics including drift, diffusion, and recombination events.
Transistor animations made with semiconductor simulator.
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)
Source: Hacker News
