Subsystem: IP2 |
Task
Title:
Investigating Switches |
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Switch
Triggers |
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Introduction and Aims In this activity we will be using a selection of switches to control an output - a buzzer in this case. Switches are designed to be operated by people in different ways. This makes them suitable for a variety of needs or uses. We will show how this subsystem acts as a "voltage source" and provides a + voltage at its output when the switch is operated. We will find this type of switching useful when we build bigger systems using other process modules.
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Modelling the System/Circuit There are different ways to model and test circuits before components are soldered to a P.C.B.. Modelling is an important stage as it helps you spot any problems and make modifications more easily. Method 1: Breadboard Using this method, components are pushed into the interconnected holes as shown in the diagram below. The lines shown, indicate which holes are internally connected. Method 2: Computer Simulation To begin, ask your supervisor if circuit simulation software is available on your PC. This method allows you to build up your circuits quickly and cheaply in a virtual environment but will not give you hands-on experience of the components you will be using when finally soldering your P.C.B.. Method 3: Using OnTrack modelling hardware
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