CHAPTER 6
Transistors, FETs, and Vacuum Tubes
Chapters 4 and 5 introduced light-emitting diodes (LEDs) and diodes, which we found can be used as switches or attenuators to control the strength of a signal. What neither LEDs nor diodes could do was to make the original signal larger. When a signal is switched, the signal is either on or off. And when a signal is already attenuated (i.e., reduced in strength) via a resistive divider circuit, further attenuation using LEDs or diodes as variable resistors does not provide for amplification. Therefore, in this chapter we will explore amplifying devices, which allow a signal to become larger in terms ...
Get Electronics from the Ground Up: Learn by Hacking, Designing, and Inventing now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
