electrical theory and electrical fundementals for all electrical related people . students , engineers, electrician #electricaltheorems,electrical,

Thursday, 21 December 2017

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Play Music Using Light | LiFi system

electrical theory and electrical fundementals for all electrical related people . students , engineers, electrician #electricaltheorems,electrical,



LiFi System


Light Fidelity (Li-Fi) is a new paradigm in wireless communication. In this article, we describe the design of a Li-Fi dongle (transmitter) and speaker (receiver) for audio and music applications. The proposed system is a replacement for wired speakers that plays audio signals received through light.

1. The LED light in a room is used not just to light up the room but also to play music, thus giving benefits of both the worlds. Also, LED bulbs use 85 per cent less energy than incandescent bulbs and last up to 20 times longer, whereas majority of Bluetooth modules are battery powered and generally last a year or two only before they need replacement. Hence the proposed system is energy-efficient over Bluetooth version.

2. You can receive Li-Fi data as long as you are in the range of the light being emitted by the LED light source. Hence, the range depends on the strength of the light being emitted.
3. Connectivity needs to be established between the Bluetooth transmitter and the receiver, whereas with Li-Fi any user can receive data and play music on his speaker by simply keeping the receiver in the range of LED light source.
4. The proposed system can be used with any audio system by just connecting the Li-Fi dongle to its audio output jack, with no pairing and connectivity requests. This overcomes the problem of connecting a Bluetooth speaker to audio systems that do not have USB port and Bluetooth support, which is otherwise a tougher task.
5. The proposed Li-Fi dongle and speaker costs lower than a Bluetooth dongle and speaker.
The proposed concept is illustrated in Fig. 1. It uses a Li-Fi dongle to transmit audio signals from a source such as mobile phone, and a Li-Fi speaker with solar cells at the receiver end to receive audio signals without wires.
The proposed Li-Fi dongle is connected to the audio jack output available on mobile phones. It has an LED through which audio/music signals are transmitted as light signals. These light signals are captured by the Li-Fi speaker through the solar cell array.

Circuit and Working Details


shows the circuit of the Li-Fi dongle. It uses three common-emitter (CE) amplifiers connected in parallel to amplify the input audio signal. The Li-Fi speaker is designed by connecting the output of a 3V, 200mA solar cell array to a speaker’s audio input. For this, connect the terminals of the solar panel to a 3.5mm female audio socket. Then, connect the 3.5mm audio jack from the speaker to the female socket.
However, you need not buy the exact speaker or Li-Fi speaker. Any speaker with inbuilt amplifier will do the job. You can modify the same to work as a Li-Fi speaker by interfacing a solar panel to it. After adjusting the band equaliser in the audio source and the distance between the solar panel and the light source, you can get almost noise-free sound from the speaker.
The maximum distance/range between the transmitter and receiver depends on the number of amplifier stages. For a three-stage CE amplifier, the maximum distance is about two metres with LED illuminance of 13,842.00 lux at the receiver side. For a five-stage CE amplifier, the distance can be up to 2.6 metres with LED illuminance of 17,382.00 lux. It was observed that as you increase the number of CE amplifier stages connected in parallel in the transmitter circuit, the intensity of LED light also increases, which, in turn, increases the maximum distance up to which the sound is audible from the Li-Fi speaker.

Sunday, 8 October 2017

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HOUSEPARTY- Group Video Chat Application

electrical theory and electrical fundementals for all electrical related people . students , engineers, electrician #electricaltheorems,electrical,

HOUSEPARTY APPLICATION 




Houseparty is the group video chat app that you’ve been missing in your life. It’s simple, synchronous and social. We empower people to have more frequent conversations with the people they care about most, meet new friends, and have fun together - wherever they are.







    

Thursday, 5 October 2017

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ONMOVIES APP FOR MOVIE DOWNLOADING

electrical theory and electrical fundementals for all electrical related people . students , engineers, electrician #electricaltheorems,electrical,

On movies app is used for download new Movies and Watch Live TV









Saturday, 23 September 2017

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Adobe All Software downloading With Crack

electrical theory and electrical fundementals for all electrical related people . students , engineers, electrician #electricaltheorems,electrical,

Download Adobe 2017 All products and crack the software using simple step.
 Download adob creative cloud and software crack generator in the below download link


Open Creative cloud and Install the software

 Open App tab and install your favorite adobe application in trial version

After install and dont open the software

Open AMT EMU software

Select your software and Click to Insatll Button

Select software path in  C Drive and select dml file

Download Creative Cloud and Crack App

 

 
https://drive.google.com/open?id=0B4kZe0Cro-SMZzdoZE1pMXN4enM