Aim: Designing a differentiator using an op amp and studying its frequency responses.
Apparatus Required: 741 IC, Multimeter, CRO, Dual power supply (15-0-15 V), Resistors, Capacitors, and connecting wires.
Theory: This operational amplifier circuit performs the mathematical operation of Differentiation, that is, it “produces a voltage output which is directly proportional to the input voltage’s rate-of-change with respect to time“. In other words, the faster or larger the change to the input voltage signal, the greater the input current, the greater will be the output voltage change in response, becoming more of a “spike” in shape.
Circuit Diagram:
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Precautions:
- Do not connect more than 15 v DC supply
- Always check the Dual power supply with a multimeter before connecting it to the circuit
- Connect an input supply such that the corresponding output remains within the range +14 to -14 volts
- Connections should be neat and tight.
