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Description
LM348N Operational Amplifier, Quad, 1 MHz, 4, 0,5 From 4V to 18V, DIP, 14
Tutorial: How to Use LM348N Operational Amplifier
The LM348N operational amplifier is a fundamental component for projects requiring signal amplification and filtering. It is ideal for beginner and intermediate makers, providing a solid foundation for advanced experiments in analog electronics.
What you need
- Arduino Uno
- USB A-MicroB Cable
- Perforated Prototype Board
- Variable Resistors (Potentiometers)
- Capacitors
Steps
- Mount the LM348N operational amplifier on the perforated prototype board.
- Connect the potentiometer to the input pins of the LM348N to adjust the signal sensitivity.
- Connect the capacitors between ground and the power pins to filter out interference.
- Configure the operational amplifier power supply with positive and negative voltages.
- Connect the circuit to an Arduino Uno via USB A-MicroB cable.
- Write the Arduino sketch to read signals from LM348N.
- Test the circuit with different inputs and adjust the variable resistors (potentiometers).
- Verify the correct function of the operational amplifier with an oscilloscope or multimeter.
Mini project
[‘Build a light sensor integrating the LM348N to amplify the signals from the photoresistor. Connect the circuit to Arduino and display the light values on Serial Monitor.’]
Common mistakes
- Do not verify the supply voltage.
- Connect the amplifier with incorrect polarity.
- Omit filter capacitors.
- Use resistors that are too high or low for the potentiometer.
Recommended accessories
- Arduino Uno
- Perforated prototyping board
- Variable potentiometers 10kΩ
- Ceramic capacitors 1µF
Frequently asked questions
How do you connect the power pins?
Check the datasheet for the minimum and maximum supported voltage for the LM348N.
Which resistors to use with the potentiometer?
Use variable resistors (potentiometers) of 10kΩ to easily adjust the signal amplification.
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