O'Reilly logo

Principles of Transistor Circuits, 9th Edition by Mike James, S Amos

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix B

Transistor parameters

Introduction

There are three main systems of expressing the properties of a fourterminal network. In each the network is regarded as having an input voltage vi, an input current ii, an output voltage vo and output current io as illustrated in Fig. B.1.

image
Fig. B.1

Z parameters

In the first system the input and output voltages are expressed in terms of the input and output currents thus:

vi=ziii+zrio (B.1)

image (B.1)

vo=zfii+zoio (B.2)

(B.2)

The factors zi, zr, etc., have the nature of impedances because, when multiplied by currents, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required