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Designing 1 Watt Audio Power Amplifier - 3/9

Contributor: 

Dikhsa
1 Watt Audio Power Amplifier CircuitIn the previous tutorial, a 250 Milli Watt Audio Power Amplifier was designed using LM-386 power amplifier IC. On the basis of application, the audio amplifiers can be categorized into two classes - 
1) Pre-Amplifier
2) Power Amplifier
 
The pre-amplifiers are used to level up the audio signals from a microphone or audio source to standard voltage levels while the power amplifiers are generally used at the output stage of the audio systems to boost audio signals before they are reproduced by the speakers. In this tutorial, a power amplifier with 1 Watt output power will be designed. The audio amplifier designed in this project will operate in range from 20 Hz to 20 KHz which is the same as of the audible range of frequencies by humans. The amplifier circuit will be designed to have a variable voltage gain in range from 26 dB to 46 dB.

High and Low Side Switching of MOSFET - ( Part 13/17)

Contributor: 

Dikhsa
MOSFET connected as Low Side SwitchWhile designing the UPS circuits, MOSFET were used in the inverter circuits. The MOSFET were used as High side switches in the circuit. For driving the MOSFET in high side configuration, IR2110 gate driver IC was used. IR2110 is a High –Low side Gate Driver IC which is used with power MOSFET and IGBT. A Gate Driver is a specially designed circuit that is used to drive the Gate of MOSFET or IGBT in High Side Switching application. That means when MOSFET/IGBT is used in High side configuration then a Gatedriver IC is need to be used. 
 
In this tutorial, some important concepts like the High and Low side Switching of MOSFET, need of Gate Driver circuit and driving methods of High side MOSFETs will be discussed. These concepts will crystal clear the working of MOSFET as a switch and will so justify the use of MOSFET in inverter circuit as switching component. 

Designing 250 Milli Watt Audio Power Amplifier - 2/9

Contributor: 

Dikhsa
250 mW Audio Power Amplifier Circuit In the previous tutorial, basics of audio amplifiers were discussed. It has been already mentioned that on the basis of application, there are two types of audio amplifiers - 
1) Pre-Amplifier
2) Power Amplifier
 
The pre-amplifiers are used to level up the audio signals from a microphone or audio source to standard voltage levels while the power amplifiers are generally used at the output stage of the audio systems to boost audio signals before they are reproduced by the speakers. In this tutorial, a power amplifier with 250 Milli-Watt output power will be designed.
 

Designing an Offline UPS - Part (12 /17)

Contributor: 

Dikhsa
Offline UPS Circuit using Modified Sine Wave Inverter and Lead Acid battery ChargerIn the previous tutorial, Online UPS was assembled from its basic building blocks like Lead Acid battery Charger, Square Wave Inverter and Modified Sine Wave Inverter. Now in this tutorial, offline UPS will be designed. The Offline UPS is one of the topologies of UPS (Uninterruptible Power Supply). In UPS system, the term topology refers to the switching mechanism of the UPS system. 
 
Contrary to online UPS, in offline UPS, the load circuit is initially directly powered by the AC mains. On the failure of power supply, the power failure is detected by a switching circuit and the power is provided to the load through the battery and inverter after the power failure has already occurred. So, in the offline UPS, the load experiences the power cutoff once before it receives the power backup from the UPS.

4A/10A, 220V Power Amplifier ICs

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Sponsored Content

The PA164/PA165 are high density power amplifier ICs that elevate the performance benchmarks and thermal management efficiency for single-chip power amplifiers. These devices are capable of providing 1A/4A of output current continuously, and up to 10A PEAK output for the PA165, while operating on voltage supplies of up to 200V.

These ICs are designed to use separate supplies for the amplifier core and the output stage to help optimize overall power dissipation capabilities of up to 28W of internally generated heat.

IOT based Solar Panel Monitoring Using Particle Photon

Contributor: 

Hari Prasaath K
Particle Photon based Solar Panel Monitoring IOT Project Circuit ConnectionsSolar energy is the future of energy industry. The countries all around the world are focusing towards renewable and clean sources of energy. The sunlight is the most abundant resource available everywhere and each day. By generating energy using sunlight, the electricity generation can be done without any pollution.
 
The solar plants now have been generating not only energy but also immense opportunities  of employment as well. The solar plants have been now employing more people than the coal industry. So, the use of such resources like the solar energy is useful  from every aspect ranging from environment to economy.

Intel Brings Forth New Products Intel Pentium And Intel Celeron In Line Of Processors

Submitted By: 

Bijal Parikh

In last few decades, Intel has gained a reputation for setting up new benchmarks in terms of performance, connectivity, and product value. Recently, it came up with two new processors extending its two famous product lines - Pentium and Celeron. The unveiled processors are named as Intel Pentium Silver and Intel Celeron processors. Both these are extracted from an Intel architecture codenamed as Gemini Lake. These new configurations have been engineered to set new standards of performance and connectivity for everyday tasks. It is meant for people dealing with online browsing, spreadsheets, watching online shows and movies and other normal stuff.

Fujitsu Makes Use Of FPGA Accelerator In Development Of WAN Acceleration Technology

Submitted By: 

Bijal Parikh

Fujitsu Laboratories Ltd. recently came up with a WAN acceleration technology equipped with an ability to transfer large volumes of data between clouds with speeds scaling up to 40Gbps. It uses Field-Programmable Gate Arrays (FPGAs) as catalysts to complete the process. The measure of connectivity on Wide Area Networking lines between clouds is already ticking up from 1Gbps to 10 Gbps, however, this is not enough. The advent of new technologies like AI and IoT steps up the urgency of high-speed data transference. Clouds overwhelmed with too much data would tend to go unstable if it is not transferred to  other clouds with at a higher pace

IOT Based Weather Monitoring System Using Particle Photon

Contributor: 

Hari Prasaath K
Blynk App UI for Particle Photon based IOT Weather Monitoring SystemWeather Monitoring Systems are used to monitor the continuously changing climatic conditions. The data gathered by such devices is used to forecast weather as well as keep a log of the environmental changes at a place. Such data is extremely useful in the study of earth and analyzing the changing climatic and environmental conditions at a place.
 
Further, the data and analytics so collected can be utilized in a variety of applications like agriculture, geology, mining and weather forecast. In this project, a simple weather monitoring system is designed which can monitor the temperature and humidity of a place.  The weather monitoring system designed in this project is an IOT device built on Particle Photon. Particle Photon is an Arduino compatible IOT board. For writing the program code for any Photon, developer needs to create an account on Particle website and register the Photon board with his user account. 

Controlling LED lights from a Web Server using ESP8266 Wi-Fi Module based IOT device

Contributor: 

Hari Prasaath K
ESP8266 based IOT LED Light Control Project Circuit ConnectionsHome automation is the new trend in consumer electronics. Nowadays, people not only want a well furnished house but also want a smart home to live in. The basic concept of home automation is controlling the home appliances with a remote control.
 
The modern day smart homes may have many additional features where the user could interact with the consumer appliances through augmented reality or have various smart features like telephony, contacts management, time keeping utilities, audio and video playback all integrated in smart devices especially designed to be part of the smart home.