
4
Amplifiers
A common theme in many electronic circuits is the need to increase the
level of voltage, current, or power present. This need is satisfied by some
form of amplifier. While this chapter is devoted to amplifier circuits
generally, it excludes all forms of circuit based on general purpose
integrated circuit operational amplifiers. These circuits are discussed
separately in Chapter 5.
Amplifier characteristics and specifications
Amplifiers may be categorized under a number of general headings
including such characteristics as frequency response, class of operation,
and the type of circuitry employed. The following six general categorie ...