Electronics Engineering

Collector Modulation Circuit – Working, Advantages and Disadvantages

Collector Modulation Circuit – Working, Advantages and Disadvantages: This is very popular method for AM generation. The circuit diagram for collector modulation is shown in Fig. 22.26. Here, the transistor Q1 makes an RF class C amplifier. The carrier signal is applied to the base of Q1. VCC makes collector supply used for biasing purpose. …

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Modulation – Definition, Types and Need for Modulation

Modulation – Definition, Types and Need for Modulation: Any wave has three significant characteristics viz. amplitude, frequency and phase, and modulation is a process of impressing information to be transmitted on a high frequency wave, called the carrier wave, by changing its one of the characteristics (amplitude, frequency or phase angle). Modulation may also be …

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Basic Block Diagram of Communication System

Basic Block Diagram of Communication System: The Basic Block Diagram of Communication System is shown in Fig. 22.1. The essential components of a communication system are information source, input transducer, transmitter, communication channel, receiver and destination. As already mentioned above, a communication system serves to communicate a message or information. This message or information originates …

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