We learned about operational amplifiers which perform mathematical operations of addition, subtraction, multiplication, division, differentiation, and integration.
The op amp is an electronic unit that behaves like a voltage-controlled voltage source.
We leaned how to transfer it into a circuit. The picture above is how we view it in a circuit.
When the time I finished the exam, the class was doing the lab.
Inverting Voltage Amplifier
The picture above is the basic set up for this lab.
If we redrew the circuit, we got the circuit above.
We chose the use 2.2k ohms and 4.7 ohms resistors to design an inverting amplifier which provides a gain of approximately 2.
We chose the use 2.2k ohms and 4.7 ohms resistors to design an inverting amplifier which provides a gain of approximately 2.
We got the graph below:
The relationship between Vin and Vout for this circuit is:
The dots in the middle of the graph follow the equation above.
From the first three dots and the last three dots of the graph, we can see that the Vout is at saturation.
Summary
We leaned how op amp works in a circuit and why do we need to use op amp in real life. We only learned one type of op amp today, which is inverting voltage amplifier. We will learn many different types of op amp in the future class.
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