Various Stages in a Practical Power Amplifier and Block Diagram: Power amplifier is meant to amplify a weak signal until sufficient power is available to operate an output device such…
Transformer Coupled Transistor Amplifier - Working Principle: The main cause for low voltage and power gains of an R-C coupled amplifier is that the effective load (Rac) of each stage…
RC Coupled Transistor Amplifier - Operations, Derivation and Applications: A two-stage RC Coupled Transistor Amplifier using N-P-N transistors in CE configuration is shown in Fig. 16.12. The two transistors used are…
Step Response of an Amplifier: An alternative criterion of amplifier fidelity is the response of the amplifier to a particular input waveform. Of all possible available waveforms, the most generally…
What is Multistage Amplifier? - Types, Block Diagram and Analysis Amplifiers that produce voltage, current, and/or power gain through the use of two or more stages are called multistage amplifiers.…
FET as a Voltage Variable Resistor (VVR): FET is a device that is usually operated in the constant-current portion of its output characteristics. But if it is operated in the…
Applications of FETs (Field Effect Transistors): Applications of FETs - FET has a very high input impedance (100 MΩ in case of JFETs and 104 to 109 MΩ in case of…
Common Gate JFET Amplifier and its AC Equivalent Circuit: The circuit of a simple Common Gate JFET Amplifier is shown in Fig. 13.53 and its ac equivalent circuit is shown…