✨INTRODUCTION TO DIODES
Any non linearity such as that introduced by amplifier output saturation ,was considered a problem to be solved by the circuit designer. However there are many other signal processing functions that can be implemented only by nonlinear circuits examples- include the generation of DC voltages from the dc power supply and the generation of signals of various wave forms such as sinusoids, square waves, pulses and so on. Also digital logic and memory circuits constitute a special class of non linear circuits.
The simplest and most fundamental nonlinear circuit element is the diode. Just like a resistor, the diode has two terminals; but unlike the resistor, which has a linear (straight-line) relationship between the current flowing through it and the voltage appearing across it, the diode has a nonlinear i–v characteristic.
In order to understand the essence of the diode function, we begin with a fictitious element, the ideal diode. We then introduce the silicon junction diode, explain its terminal characteristics, and provide techniques for the analysis of diode circuits. The latter task involves the important subject of device modeling. Our study of modeling the diode characteristics will lay the foundation for our study of modeling transistor operation in the next.
In order to understand the essence of the diode function, we begin with a fictitious element, the ideal diode. We then introduce the silicon junction diode, explain its terminal characteristics, and provide techniques for the analysis of diode circuits. The latter task involves the important subject of device modeling. Our study of modeling the diode characteristics will lay the foundation for our study of modeling transistor operation in the next.
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