Cascaded Differential Amplifier Working Principle: Cascaded Differential Amplifier Working Principle - Figure 20.53 gives an idea of how differential amplifiers can be cascaded to give an op-amp. Here the output of first section differential amplifier…
What is Current Mirror? - Circuit Diagram and its Workings The two-transistor current source, also called a current mirror, is the basic building block in the design of integrated circuit current sources. Figure 20.25 (a)…
Constant Current Bias in Differential Amplifier: In the differential amplifiers discussed so far, we have used the combination of RE and VEE to produce emitter dc bias current. Alternatively, constant current bias circuit can also…
Constant Current Source in Differential Amplifier: An ideal current source provides a constant current regardless of the load connected to it. There are many applications in electronics for a circuit that provides a constant current…
Swamping Resistor in Differential Amplifier: The dependence of the voltage gain of the differential amplifiers on variations in ac emitter resistance r′e can be reduced and also the linearity range of the differential amplifiers can…
Single Input Unbalanced Output Differential Amplifier: Single input unbalanced output differential amplifier configurations are rarely used. The reasons for this are as follows: This configuration is identical to the CE amplifier but it needs comparatively…
Single Input Balanced Output Differential Amplifier: In a single input balanced output differential amplifier an input signal is applied to either input, with the other input connected to ground. However, due to the common-emitter connection…
Dual Input Unbalanced Output Differential Amplifier: It is an important configuration and converts dual inputs into a single ended output. In this configuration, two input signals are applied and the output is measured at only…
Dual Input Balanced Output Differential Amplifier: The dual input balanced output differential amplifier configuration is shown in Fig. 20.2. In the given circuit two input signals vin1 and vin2 are applied to the bases B1 and…
Feedback Pair Connection - Operation and its Equivalent Circuit: The feedback pair connection (Fig. 19.58) is a two-transistor circuit that operates like the Darlington amplifier. It makes use of a PNP transistor driving an NPN…
