Robot Building for Beginners, Third Edition
CHAPTER 16 ■ TRANSISTOR SWITCHES I can’t think of a more concrete example to demonstrate that PNP and NPN transistors are genera ...
CHAPTER 27 ■ ENCORE 1 pF to 1 mF: used in moderately accurate timing circuits. 1 pF to 40 pF: vital for high-accuracy crystal-b ...
CHAPTER 16 ■ TRANSISTOR SWITCHES Calculating Current-Limiting Transistors R17 and R18 are current-limiting resistors. They prote ...
CHAPTER 27 ■ ENCORE BEAM Robots There’s a whole class of tiny, simple robots that utilize solar panels instead of batteries. The ...
CHAPTER 16 ■ TRANSISTOR SWITCHES ■ Note There are a number of potential outcomes when a circuit design exceeds the minimum and m ...
CHAPTER 27 ■ ENCORE Pushbuttons Most pushbuttons are spring-loaded switches. Push down and the switch connects, let go and the s ...
CHAPTER 16 ■ TRANSISTOR SWITCHES Because the gain varies from transistor to transistor (even within a batch), it isn’t reliable ...
CHAPTER 27 ■ ENCORE A word of warning with pushbuttons and switches: there’s a moment during the physical transition between on ...
CHAPTER 17 DC Motors Motion is one of the primary differentiators between a robot and a computer. More robots get their motion f ...
CHAPTER 27 ■ ENCORE A plastic piece, called a “shorting block” (see Figure 27-10), containing a thin strip of metal is placed ov ...
CHAPTER 17 ■ DC MOTORS Looking Inside an Iron-Core Permanent-Magnet DC Brush Motor An iron-core permanent-magnet DC brush motor ...
CHAPTER 27 ■ ENCORE I can’t imagine the part will work while the robot is moving, since the ball probably bounces around a lot. ...
CHAPTER 17 ■ DC MOTORS Rotor The rotor (the rotating part) is built around a shaft. The shaft sticks out the end of the motor bo ...
CHAPTER 27 ■ ENCORE The simplest sense of touch is a pushbutton of some form. Appropriate pushbuttons for touch sensing have lon ...
CHAPTER 17 ■ DC MOTORS Rotor Commutator At the end of the shaft is a commutator (see Figure 17-5). It contains two or more segme ...
CHAPTER 27 ■ ENCORE By observing the time between the appearances of a signal, an appliance can decode commands, which is the ba ...
CHAPTER 17 ■ DC MOTORS Rotor Brushes The “brush” term in “DC brush motor” indicates that the motor has brushes. The brushes conn ...
CHAPTER 27 ■ ENCORE For breadboard applications, oscillators are available in the space-saving half-can size (see Figure 27-16) ...
CHAPTER 17 ■ DC MOTORS Living Longer Without Brushes Brushes are usually the first part to wear out on a brush motor. The lack o ...
CHAPTER 27 ■ ENCORE Voice recognition is difficult enough for high-powered computers, much less a robot. However, recording and ...
«
29
30
31
32
33
34
35
36
37
38
»
Free download pdf
