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7.2 State THREE characteristics of an ideal op amp - NSC Electrical Technology Power Systems - Question 5 - 2017 - Paper 1
Question 5
7.2 State THREE characteristics of an ideal op amp. 7.1 Draw and label the symbol of an operational amplifier (op amp).
Worked Solution & Example Answer:7.2 State THREE characteristics of an ideal op amp - NSC Electrical Technology Power Systems - Question 5 - 2017 - Paper 1
Step 1
State THREE characteristics of an ideal op amp.
Answer
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Infinite Open Loop Gain: An ideal operational amplifier has an infinite open-loop gain, which means the output completely amplifies any difference in the input voltages.
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Infinite Input Impedance: An ideal op amp has infinite input impedance, ensuring that no current is drawn from the input sources, thereby not affecting the circuit being measured.
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Zero Output Impedance: An ideal operational amplifier has zero output impedance, allowing it to drive any load without changing the output voltage.
Step 2
Draw and label the symbol of an operational amplifier (op amp).
Answer
The symbol of an operational amplifier is represented as follows:
+---
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+ | |
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+---+
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In this drawing, the '+' represents the non-inverting input, and the '-' represents the inverting input. The triangle indicates the operational amplifier, which has two inputs and one output.