User:Harichandrad.elec/sandbox

FOUR LAYER DIODE (PNPN Diode) The four layer diode is also known as 'shoockley diode'. It is made up of alternating layers of n-type and p-type semiconductor. The four layer diode was the first integrated circuit. Now a days four layer diodes known as thyrister PNPN is the type of four layer diode

PNPN diode Definition:- A semiconductor device consisting of four alternating layers of p-type and N-type semiconductor material with terminal connection to the two outer layers is known as pnpn diode.

ALGEBRAS, CIRCUITS, COMPUTER LOGIC, MATHEMATICAL ANALYSIS, MATHEMATICAL LOGIC, NEGATIVE RESISTANCE CIRCUITS, SEMICONDUCTORS, THEORY
 * DIODES,
 * SWITCHING CIRCUITS,