Op-Amp as Buffer
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 buffer. This circuit is very easy to understand and working is given below. 1. This circuit requires just two components, a variable resistor or 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. 4. A viper of variable resistor is connected with the non-inverting input of the op-amp. 5. This configuration has many names: a) Op-amp as voltage follower b) Op-amp as unity gain amplifier c) Op-amp as buffer 6. In this circuit, you will see the output is same as input, volt meters are placed at input and as well as output. 7. Therefore Vin = Vout. Applications: 1. This circuit is used as voltage follower. 2. This circuit is used as buffer for week signal. 3. This circuit can be used as unity gain amplifier.