Photo AI
State THREE characteristics of an ideal op-amp - NSC Electrical Technology Electronics - Question 6 - 2017 - Paper 1
Question 6
State THREE characteristics of an ideal op-amp. Draw and label the schematic of an operational amplifier (op-amp).
Worked Solution & Example Answer:State THREE characteristics of an ideal op-amp - NSC Electrical Technology Electronics - Question 6 - 2017 - Paper 1
Step 1
State THREE characteristics of an ideal op-amp.
Answer
-
Infinite Open-Loop Gain: An ideal op-amp has an open-loop gain that approaches infinity, allowing it to amplify even the smallest difference between its input terminals without any distortion.
-
Infinite Input Impedance: The input impedance of an ideal op-amp is infinite, meaning that it draws no current from the input source, ensuring that the input signal is not affected by the op-amp's presence.
-
Zero Output Impedance: An ideal op-amp exhibits zero output impedance, allowing it to drive any load without any loss of voltage or power.
Step 2
Draw and label the schematic of an operational amplifier (op-amp).
Answer
The schematic of an operational amplifier is represented as follows:
+V
|\n |
| +----+
+|----| + | |----| Output
Inverting | | | Op-Amp |
Input (V-) |----| - | |
-| | |----|
| +----+
| |
| |
| GND
-V
- Inputs: The two inputs of the op-amp are the inverting input (V-) and the non-inverting input (V+).
- Output: The output of the op-amp is the amplified signal based on the difference between the inverting and non-inverting inputs.