Last time, we learned basically all we needed to know for analysis of steady-state dc circuits. Today we will put some of the rules we came up with into practice and learn a few more tricks for circuit analysis. We'll also add a few more elements to our toolkit - in particular, diodes and transistors - to go with the resistors, voltage & current sources we already know.
For the lab, you will be constructing one of two transistor-based circuits: an automatic night light, and a burglar alarm that senses when a door opens. For the former you will use a photoresistor or phototransistor as a light sensor, and for the latter you will use a Reed switch and a magnet as a motion sensor. Both circuits are derived from a very basic transistor-based current source, which we will analyze in class.
I've written some notes on transistor circuits, since you will not find them in your textbook. We will not go into great depth, just enough to learn how to make some neat and functional circuits. I you are an EE major, this will either be review or a preview ...
For the lab, you will be constructing one of two transistor-based circuits: an automatic night light, and a burglar alarm that senses when a door opens. For the former you will use a photoresistor or phototransistor as a light sensor, and for the latter you will use a Reed switch and a magnet as a motion sensor. Both circuits are derived from a very basic transistor-based current source, which we will analyze in class.
I've written some notes on transistor circuits, since you will not find them in your textbook. We will not go into great depth, just enough to learn how to make some neat and functional circuits. I you are an EE major, this will either be review or a preview ...
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