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A switching converter that changes an ac supply to the ac supply with a different voltage, frequency, phase, or shape is called an AC/AC converter or changer.
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Communication System
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The RF signal is intercepted by the antenna and amplified by the RF amplifier. The amplified RF signal is applied to the first mixer. |
The receiving antenna intercepts the electromagnetic radiations and converts them into RF voltage. The RF signal is then applied to the RF amplifier through the antenna coupling, network, |
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In an FM signal, the instantaneous frequency varies in accordance with the modulating signal. For a sinusoidal modulating signal, the frequency deviation in an FM signal is sinusoidal, and it is proportional to the modulating, amplitude. |
A balanced slope detector is an improved version of the slope detector. The drawback of harmonic distortion is removed in this detector by using two slope detectors instead of one as in a single-tuned slope detector. |
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According to the principle of the slope detector, the received FM signal is applied to an LC circuit whose output is an amplitude and frequency-modulated signal. |
Communication system may be categorized based on their physical infrastructure and the specifications of the signals they transmit. |
Basic Electronics
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AC/DC converters serve as rectifiers. They convert ac to dc in a number of industrial, domestic, agricultural, and other applications. |
In the mesh current method, you will work with loop currents instead of branch currents. A branch current is the actual current through a branch. An ammeter pleased in a given branch will measure the branch current. |
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Another alternate method of analysis of multiple loop circuits is called the node voltage method. It is based on finding the voltages at each node in the circuit using Kirchhoff s current law. |
In the branch current method Kirchhoff's voltage and current laws are used to solve for the current in each branch of a circuit. Once the branch currents are known, voltages can be determined. |
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Electrical Quantities i.e. Potential, Volt, Current, Resistance, Electron Current, Conventional Current, Volt, Ampere, Ohm |
Each discrete distance orbit from the nucleus corresponds to a certain energy level. The electron which rotates in the lowest orbit has lowest energy level and in the outermost orbit, electrons have higher energy levels. |
Industrial Electronics
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Comparison of imperial and metric conductor sizes |
If the object of the control systems is to maintain a physical variable at some constant value in the presence of disturbances, we call this system a "Static control system" or a "regulator". |
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PLC stands for programmable logic control. It is computer designed to be used in industry. It controls the different process and is programmed According to the operational requirement of that process. |
Process control can be defined as the function and operation necessary to change or stop a device or material either chemically or physically. |
Microwave & Radar
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Digital Microwave Communication Equipment explanation in detail with help of diagrams and images. |
Microwave is a kind of electromagnetic wave. In a broad sense, the microwave frequency range is from 300 MHz to 300 GHz. But In microwave communication, the frequency range is generally from 3 GHz to 30 GHz. |
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When the electromagnetic waves are propagated from the transmitter antenna, it travels in a free space, up to receiver antenna. The movement of theses electromagnetic waves took place by different ways. |
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Characteristics of Electromagnetic Waves |
Devices & Circuits
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A switching converter that changes an ac supply to the ac supply with a different voltage, frequency, phase, or shape is called an AC/AC converter or changer. |
DC/AC converters named inverters are employed to convert a dc supply to an ac level of a definite frequency and value. Controlled semiconductor devices, such as transistors, SCR, and GTO thyristors are used in inverters. |
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How transistor, capacitor, resistor and diodes are fabricated on a chip. The steps involved in fabrication of a semiconductor devices on a chip are discussed below in detail. |
The separately manufactured components like resistor, capacitor, diode, and transistor are joined by wires or by printed circuit board (PCB) to form circuits. These circuits |
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The operational amplifier or OP-AMP is a direct coupled, high gain amplifer used to perform a wide variety of mathematical operation used to perform like summation, subtraction, multiplication, differentiation and integration etc. |
A inverting amplifier provides the same function as the common emitter and common-source amplifiers. |
Digital Electronics
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A clipper is a device which limits, remove or prevents some portion of the wave form (input signal voltage) above or below a certain level In other words the circuit which limits positive |
The operational amplifier is an amplifier which is directly coupled between the output and input, having a very high gain. |
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Consider the series RLC filter circuit shows in Fig. 1(a). If a unit step function is applied, we see that: |
Simple RC circuits are not used in switching circuits, especially, in integrated circuit. However, inductors are still used, as in the case of current sweep generation, tunnel diode monostable and astable circuits. |
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Fig. 1 shows the series RC high-pass circuit. In such circuit, the output is taken across the resistor and practically reactance of the capacitor decrease with increasing frequency. |
Timing circuits networks composed of resistors, capacitors and inductors are called linear network and they do not change the waveform of a sine wave when it is transmitted through them. |
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