Schottky diode
A diode Schottky (named according to the German physicist Walter H. Schottky) is a Diode which have a threshold of direct tension very low and a very short switching time. This allows the detection of the weak signals HF and ultra high frequencies, making it useful for example in Radioastronomie. One also uses it for his capacity to be let forward relatively strong intensities for the rectification of power.
A Schottky diode uses a Jonction metal-semiconductor (instead of a junction p-n like the conventional diodes). Whereas the standard diodes in Silicium have a tension of threshold of approximately 0.6 Volt, the Schottky diodes have a tension of threshold (for a direct polarization from approximately 1 my) in the range of 0.15V with 0.45 V, which makes them useful in limitation of tension and prevention of saturation of the Transistor S.
Among the most current Schottky diodes, one finds the 1N5817, and of the junctions Schottky metal-semiconductor are present in the logical components of the 74S families, 74LS, 74F and 74AF for their commutation rate high and their weak voltage drop.
The ancestor of the diode schottky used two materials " naturels" (a point of Steel and a crystal of Crystal), in the Station with crystal.
See too
- electrokinetic Diode
- Electronics component
- electronic
- electricity
- Walter Schottky
External bonds
August 1st| Random links: | Equip with Kazakhstan of Rugby to XV | Fu section | Osborne Colson | Messier channel | Automobile Grand Prix of Hungary 1993 | Sarcanthinae |