Apa itu Op Amp Operational Amplifier ┃Cara kerja Op Amp┃Data sheet
Introduction and Request to Discuss OpAmp
The speaker introduces the topic of discussing OpAmp in layman's terms. They mention that it will not be too theoretical.
OpAmp Basics
- The speaker suggests looking for the cheapest OpAmp when purchasing.
- The specific OpAmp mentioned is LM358.
- LM358 is a low power dual operational amplifier with various features such as high DC amplifier, frequency usage up to 1MHz, wide supply range, and low input offset voltage.
- It can be used in applications like active filters and signal detection.
Schematic Demonstration of OpAmp
The speaker demonstrates a schematic using an OpAmp as a voltage comparator.
Schematic Setup
- Pin configuration of LM358 is explained (Vcc, ground, input +, input -).
- Resistors R1 and R2 are used for voltage division.
- Potentiometer is used to adjust the voltage on pin 3 (input +).
- LED is connected to pin 1 (output) and ground.
Testing the Schematic
The speaker tests the schematic by observing the behavior of the LED based on input voltages.
Testing Procedure
- With maximum gain set, the LED cathode is connected to ground and resistor from pin 1 to Vcc.
- LED anode is connected to pin 8 (Vcc).
- Ground is connected to pin 4.
- Observations are made based on different input voltages at pin 2 (input -).
Sensitivity of OpAmp as Voltage Comparator
The speaker discusses the sensitivity of the OpAmp when used as a voltage comparator.
Sensitivity Testing
- The difference in voltage between pin 2 and pin 3 determines the output state.
- A small difference in voltage can cause a change in output state.
- The speaker demonstrates adjusting the input voltages to observe changes in LED behavior.
Conclusion and Future Application
The speaker concludes the demonstration and mentions that they will cover applications of OpAmp in a future video.
Conclusion
- The OpAmp is highly sensitive when used as a voltage comparator.
- Further applications of OpAmp will be discussed in a future video.