Automobile Lighting System In this experiment, you will build a circuit that simulates the exterior lighting system for a typical automobile. Your system will be powered by 12 Volts, derived from the power supply in your breadboard. Miniature lamps that plug into the socket board will be used for the headlight, tail-light, brake light, and high-beam.

First phase: Concepts using Multisim Design a circuit that simulates the exterior lighting system of an automobile. A single battery supplies current to three light bulbs. Develop with your team, in Multisim, the schematic of a circuit that will simulate a main switch on a car connected to a lighting system. Upon activating the main switch, two light bulbs will turn on, one simulating the headlights and the second one simulating the tail lights. A third light bulb will be used to simulate the brake light. Due to limited bulbs, you will use a single bulb to simulate one function, e.g., one bulb for the tail light instead of two bulbs. Your system should include an on/off pushbutton switch that mimics the brake pedal. When the switch is on (pedal is pressed) the brake light should turn on. Show the circuit to the instructor or TA to verify your design. Once it's verified proceed to build the system with your team.

Second phase: Adding the High Beam Modify your circuit design by adding a fourth light bulb and an additional switch to the circuit in order to simulate the high beam. Draw a new circuit of the lighting system in Multisim. As before, when the main switch is turned on, the low beam headlight and the tail light should turn on. The brake light should turn on when the pushbutton switch is on. When an additional switch is turned on in the modified circuit, the high beam (fourth light) should turn on. Show your modified circuit to the instructor or TA to verify your design, and then proceed to build the system with your team. Show your instructor or TA that you can turn on the high beam and at the same time press the brake switch to turn on the brake light.