Amplification is the conversion of a low-power signal to a higher-power signal. Normally when we think of amplification, we think of sound amplifiers for musical instruments. Indeed those are amplifiers, and we will build a sound amplifier later in this book. However, anytime you convert a low-power input to a higher-power output, you have amplified the signal, whether that was a DC signal or an AC signal. In this chapter, we will focus on amplifying DC signals.
Many devices have limits to the amount of power they can output or even the amount of power we want them to ...
