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(h) Identify and outline the function of any one of the electronic components shown: (i) (ii) - Leaving Cert Engineering - Question h - 2008
Question h
(h) Identify and outline the function of any one of the electronic components shown: (i) (ii)
Worked Solution & Example Answer:(h) Identify and outline the function of any one of the electronic components shown: (i) (ii) - Leaving Cert Engineering - Question h - 2008
Step 1
Identify and outline the function of component (i)
Answer
The component shown in (i) is a transistor. A transistor functions primarily as an amplifier or a switch in electronic circuits. When used as an amplifier, it takes a small input signal and produces a larger output signal, allowing for the enhancement of weak signals. As a switch, it can control the flow of electrical current in a circuit, enabling or disabling the circuit based on the input signal.
Step 2
Identify and outline the function of component (ii)
Answer
The component shown in (ii) is a light-emitting diode (LED). An LED is a semiconductor device that emits light when current flows through it. When electrons recombine with holes within the device, energy is released in the form of photons, producing visible light. LEDs are widely used for indicators, displays, and various lighting applications due to their efficiency and longevity.