Cascode Amplifier using MOSFET Explained

What is Cascode Amplifier? The Cascode Amplifier is the combination of the common source (Common Emitter for BJT) and the Common Gate Stage (Common Base for BJT). As shown in Fig. 1, the input is applied to the common source amplifier. Fig.1 Cascode Amplifier The transistor M1 is also known as amplifying transistor. And the … Read moreCascode Amplifier using MOSFET Explained

MOSFET Amplifire with Active Load

What is Active Load? In MOSFET amplifier circuits, instead of a passive resistor, the active component like a MOSFET or MOSFET circuit (Current Mirror) is used to increase the gain of the amplifier. This active component or the active circuit is known as the Active Load. Fig.1 MOSFET Amplifier with Active Load Why Active Load … Read moreMOSFET Amplifire with Active Load

MOSFET- Source Follower (Common Drain Amplifier)

In the Common Drain Amplifier configuration, the drain terminal is at AC ground.The input is applied between the gate and drain terminals, while the output is measured between the source and drain terminal.Since the drain terminal is common between the input and output side, it is known as Common Drain Amplifier. The Common Drain Amplifier … Read moreMOSFET- Source Follower (Common Drain Amplifier)

Kirchhoff’s Voltage Law (KVL) Explained

Krichhoff’s Voltage Law (KVL) Kirchhoff’s Voltage Law (KVL) and Kirchhoff’s Current Law (KCL) are very fundamental laws in the electrical circuit. Using these laws, we can find the voltage and current in the electrical circuit. Statement: The algebraic sum of all the branch voltages around any closed loop in the network or circuit is zero … Read moreKirchhoff’s Voltage Law (KVL) Explained

Op-Amp Gain Bandwidth Product

The gain bandwidth product is one of the important parameters of the op-amp and it is often used by the designers and electronic hobbyist for selecting the op-amp for specific application. Frequency Response of the Op-Amp For the ideal op-amp, the gain is infinite and it has infinite bandwidth. But the actual op-amp has finite … Read moreOp-Amp Gain Bandwidth Product

Op-Amp as Summing Amplifier

Op-Amp can be used as a summing amplifier by applying multiple inputs either to the inverting or to the non-inverting op-amp terminals. Inverting Summing Amplifier Fig.1 Inverting Summing Amplifier As shown in Fig.1, the op-amp is used as a summing amplifier in the inverting configuration. The inputs to the op-amp (V1, V2, and V3) are … Read moreOp-Amp as Summing Amplifier

Operational Amplifier: Non-Inverting Op-Amp and Op-Amp as Buffer

In this article, let’s understand the non-inverting op-amp configuration , and let’s see, how it can be used as a buffer. Fig. 1 shows the non-inverting configuration of the op-amp. In this configuration, the input is applied at the non-inverting terminal of the op-amp. Fig. 1 Non-Inverting op-amp Configuration In this configuration, there is a … Read moreOperational Amplifier: Non-Inverting Op-Amp and Op-Amp as Buffer

Inverting Op-Amp and the Concept of Virtual Ground

Inverting Op-Amp Configuration: As discussed in the previous article, the op-amp is a very high gain differential amplifier. In the open-loop configuration, the typical gain of the op-amp is 105 to 106  Fig. Operational Amplifier Because of high open-loop gain, even for a small differential input between the two terminals, the output of the op-amp will … Read moreInverting Op-Amp and the Concept of Virtual Ground