Cascode Amplifier or CE-CB Configuration: The CE-CB configuration (usually referred to as cascode amplifier) is shown in Fig. 16.44. Figure 16.44 shows a cascode configuration with a common-emitter (CE) stage feeding a common-base (CB) stage.…
Cascaded FET Amplifier Circuit Diagram: The circuit diagram of a cascaded FET amplifier is depicted in Fig. 16.43. The overall gain of the cascaded amplifier is given by the product of stage gains Av1 and…
Direct Coupled Transistor Amplifier - Operations and Equivalent Circuit: Direct coupling is essential for very low frequency (below 10 Hz) applications such as photoelectric current, thermocouple current etc. Thermocouples are used for measurement of temperature…
Impedance Coupled Transistor Amplifier: A two-stage impedance coupled transistor amplifier using N-P-N transistors in CE configuration is shown in Fig. 16.37. The only difference between this circuit and R-C coupled transistor amplifier circuit is that…
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 is reduced due to the…
What is Low Frequency Compensation? The coupling or blocking capacitor tilts the amplifier response for step input. In Fig. 16.28, if a high value of resistance Rd is added in series with RC which connects…
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 identical and use a common…
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 useful is the step voltage.…
Frequency Response of RC Coupled Amplifier: The curve drawn between the voltage gain and signal frequency of an amplifier is known as the frequency response. The performance of an frequency response of RC coupled amplifier…
n Stage Cascaded Amplifier: As already discussed, several amplifier stages are usually cascaded to increase the overall voltage gain of the amplifier. However, sometimes cascading is done to obtain the desired output and input impedance…
