Make Electronics

Experiment 14: A Pulsing Glow 126 Chapter 3 Figure 3-84. This chart allows conversion between hundredths of an inch, conventiona ...

Getting Somewhat More Serious 127 Experiment 24: Intrusion Alarm Completed Experiment 15: Intrusion Alarm Revisited Time now to ...

Experiment 15: Intrusion Alarm Revisited 128 Chapter 3 Magnetic Sensor Switches A typical alarm sensor switch consists of tw ...

Getting Somewhat More Serious 129 Experiment 15: Intrusion Alarm Revisited A Break-to-Make Transistor Circuit First, recall ...

Experiment 15: Intrusion Alarm Revisited 130 Chapter 3 I have shown the switches open, because that’s the way the schematic for ...

Getting Somewhat More Serious 131 Experiment 15: Intrusion Alarm Revisited Self-Locking Relay There’s only one remaining prob ...

Experiment 15: Intrusion Alarm Revisited 132 Chapter 3 Q1 R1 1K 10K Power to noise maker 12V DC Switches activated by opened doo ...

Getting Somewhat More Serious 133 Experiment 15: Intrusion Alarm Revisited from positive to negative, as shown by its arrow symb ...

Experiment 15: Intrusion Alarm Revisited 134 Chapter 3 essentIAls All about diodes A diode is a very early type of semiconduct ...

Getting Somewhat More Serious 135 Experiment 15: Intrusion Alarm Revisited Completing the Breadboard Alarm Circuit It’s time ...

Experiment 15: Intrusion Alarm Revisited 136 Chapter 3 The breadboarded relay circuit is exactly the same as the schematic in Fi ...

Getting Somewhat More Serious 137 Experiment 15: Intrusion Alarm Revisited essentIAls Perfboard soldering procedure Carefull ...

Experiment 15: Intrusion Alarm Revisited 138 Chapter 3 tools Four most common perfboarding errors Too much solder Bef ...

Getting Somewhat More Serious 139 Experiment 15: Intrusion Alarm Revisited Transferring components from the breadboard to the pe ...

Experiment 15: Intrusion Alarm Revisited 140 Chapter 3 Switches and Inputs for the Alarm Now you need to make the system eas ...

Getting Somewhat More Serious 141 Experiment 15: Intrusion Alarm Revisited When S1 is in its Off position, it still supplies pos ...

Experiment 15: Intrusion Alarm Revisited 142 Chapter 3 Installing the Switches If you bought a project box from RadioShack, it ...

Getting Somewhat More Serious 143 Experiment 15: Intrusion Alarm Revisited The circuit board will sit on the bottom, held in pla ...

Experiment 15: Intrusion Alarm Revisited 144 Chapter 3 attach them, and don’t allow the iron to remain in contact with anything ...

Getting Somewhat More Serious 145 Experiment 15: Intrusion Alarm Revisited Final Test When you’ve completed the circuit, test ...