![op amp multisim op amp multisim](https://slidetodoc.com/presentation_image_h/966294f5c4fe34a9e44ca4643da29bda/image-11.jpg)
As the output is connected across the input terminal, the op-amp will produce the same voltage that is provided across the other input terminal. Therefore, the voltage given across the input is available across the output.Īs discussed before, the operational amplifier makes the differentiation of both input 0. The output is connected in the negative terminal making it a 1x gain amplifier. The above amplifier circuit is a voltage follower circuit. For better understanding let's see the below image. The first rule the amplifier used to work is to make the difference between these two inputs is always zero. The positive input is called as noninverting input and the negative input is called inverting input.
![op amp multisim op amp multisim](https://www.researchgate.net/profile/Vijay-Kalyani/publication/281555093/figure/fig7/AS:284572018331651@1444858664617/simulation-of-practical-op-amp-differentiator.png)
If we look closely in the above image, there are two inputs and one output. O p-amp or Operational Amplifier is the backbone of Analog Electronics and is used in many applications, such as Summing Amplifier, differential amplifier, Instrumentation Amplifier, Op-Amp Integrator, etc. An amplifier amplifies signals, but other than amplifying signals it can also do mathematical operations. The above image is a single operational amplifier. To understand the working of this circuit it is essential to know how an operational amplifier works. The circuit is very simple and can be constructed with a minimum number of components. This type of voltage-controlled current source circuit is also called a current servo. In this project, we will explain how a voltage-controlled current source using op-amp can be designed and also build it to demonstrate its working. You can also check the constant current circuit which can also be used to drive current-controlled devices. We know that in a BJT the current flowing through the base of the transistor controls how much transistor is closed, this base current can be provided by many types of circuit, one method is to use this voltage controlled current source circuit. This type of circuit is commonly used in electronics to drive current-controlled devices like BJT, SCR, etc. In a voltage-controlled current source circuit, as the name implies, a small amount of voltage across the input will proportionally control the current flow across the output loads.