Darlington Amplifier - Circuit Diagram, Characteristics, Merits and Applications: Darlington amplifier with voltage divider bias is shown in Fig. 19.50. In this circuit the output of one amplifier is coupled…
Feedback Amplifiers Articles: Voltage Amplifier – Definition and Equivalent Circuit: Voltage amplifiers are intended to amplify an input voltage signal and provide an output voltage signal. The voltage amplifiers is…
Feedback Amplifier Interview Questions and Answers: 1. What is feedback in amplifiers? Ans. The process of combining a fraction of output energy back to the input is called the feedback. 2.…
Quasi Complementary Push Pull Amplifier: In practical power amplifier circuits, it is preferable to employ NPN transistors for both high-current output devices. As the push-pull connection needs complementary devices, a…
Audio Power Amplifiers Articles: Transformer Coupled Class A Amplifier: Class A Circuit – Instead of capacitor coupling, a Transformer Coupled Class A Amplifier may be used to ac couple amplifier…
BJT Power Amplifier with Op Amp Driver: BJT Power Amplifier with Op Amp Driver Circuit Operation - The Class-AB power shown in Fig. 18-39 uses an operational amplifier (A1) for…
Darlington Connected Output Transistors: High-power transistors usually have low current gains, so relatively large base currents must flow into Q2 and Q3 to supply a high load current. This means…
What is an Operational Amplifier?: An Operational Amplifier is a dc amplifier having a high gain, of the order of 104 - 108. Such an amplifier can perform summing, integration,…