Op-Amp as Non Inverting Amplifier
Category: Operational Amplifier
Designer: RANA MUHAMMAD ADNAN KHALIL
Notes
This circuit is designed and simulated in Proteus 7.10. In this circuit you will learn how operational amplifier (op-amp) can be used as non-inverting amplifier. This circuit is very easy to understand and working is given below. 1. This circuit requires just four components, a variable resistor for input signal, two feedback resistors and any op-amp IC, LM324 op-amp IC is used in this circuit. 2. The 12VDC is applied to the op-amp. 3. The output of op-amp is connected with the inverting input of the op-amp using feedback resistor R1. 4. Resistor R2 is connected across inverting input and ground. 5. A viper of variable resistor is connected with the non-inverting input of the op-amp. 6. This configuration is known as non-inverting amplifier. 7. The gain of non-inverting amplifier is Gain = 1 + R1/R2 Here R1 = 10K and R2 = 20K, therefore Gain = 1 + 0.5 = 1.5 8. In this circuit, you will see the output is 1.5 times greater than input, volt meters are placed at input and as well as output. 9. Therefore Vout = 1.5*Vin. Applications: 1. This circuit is used as non-inverting amplifier for week signal. 2. This circuit can be used to adjust gain of any feedback signal. 3. This circuit can be used to give offset to input signal.