This chapter continues our study of diodes. After discussing the diode
curve, we look at approximations of a diode. We need approximations
because exact analysis is very tedious and time-consuming in most
situations. For instance, an ideal approximation is usually adequate for
troubleshooting, and a second approximation gives quick and easy
solutions in many cases. Beyond this, we can use a third
approximation for better accuracy or a computer solution for almost
exact answers.
