Category: Electronics Seminar Topics

In  Laser Torch Based Communication System project we implemented a new generation “laser torch-based voice Transmitter and receiver” which is a good replacement for the present day communication systems.

Starting from the optical fiber communication wireless communication had taken several modifications recently laser based communication is gaining much attention in the field of space research and satellite communications.

Laser based voice transmitter and receiver:

Key points:

• Laser torch acts as a carrier for the voice signal to be transmitted.
• It is a wireless open channel system
• Ability to transmit voice signals up to 500 meters.

Figure: block diagram representation of Laser Torch Based Communication System.

Condenser MIC:

Capacitor based electrostatic microphone, is a most sensitive for the low amplitude signals also. Its main function is to convert the audio signal into electrical signal. These are ideal for high volume work.

Youtube video link to view circuit diagram, block diagram.

http://www.youtube.com/watch?v=PFE7Yz_sAp8&feature=youtu.be

Transmitter section:

The transmitter section is comprised of pre amplifier, operational amplifier, and heat sink for absorption of noise in the signal, VR, and laser diode.

Laser torch:

The laser torch acts as a medium for the laser. And it can transmit wavelength of range 780nm – 920nm.

Download Laser Torch Based Communication System Project Report 

Receiving section:

The receiver section of the laser communication system has photo detector for sensing the laser light, Audio amplifier for better audibility, common emitter amplifier and a loud speaker i.e. transducer.

In our project non volatile memory technology symposium (OUM); we presented solution for the limitations facing by the modern day digital memory devices. Ovonics Unified Memory (OUM) is the most advanced technology which had unique abilities in proving High endurance, low power, nonvolatile RAM with high speed facilities.

Non Volatile Memory Technology Symposium

OUM is a non-volatile memory which stores memory by using chalcogenide materials. This material comes under VI elements of the modern periodic elements. It is an alloy consists of germanium, antimony, and tellurium used for the storage of data in memory devices.

Next generation memory devices:

Apart from many more memory technologies the semi conductor technologies are gaining enormous attention in providing reduced cost/bit storage devices. The mechanism in these OUM devices is a reversible structural phase-change mechanism from the amorphous phase to a crystalline phase in a thin-film chalcogenide alloy material. OUM technology implements the conventional CMOS process to form the thin-film memory element.

Data writing mechanism:

Primarily the alloy is heated up to its melting point and rapidly cooled for getting amorphous substance and to get crystalline substrate it get heated below the melting point and make to settle down the crystalline particles for 50ns, And then programmed the programming is done in OUM devices by electrically Altering the structure i.e. amorphous or crystalline, of a small volume of chalcogenide alloy. The memory state of the cell is determined by reading the resistance.

Download Non Volatile Memory Technology Symposium Report

Introduction to Recycling Technology Innovation:

When we feel a certain thing of no use we throw it has a waste. The natural wastes can be dumped in the soil and they get decomposed after some years and they do not pollute the soil or the environment. Here We have implemented Recycling Technology Innovation for reducing electronic wastage’s in present business world.

Now a day the usage of electronic devices has increased a lot and do not have a long life so they are thrown off as a waste and they do not get decomposes in the soil and due to the silicon and other chemicals present in these devices they pollute the environment to a larger extent. The only way to reduce this is to recycle them. In this paper we will the recycle methods on electronic wastes.

Measurements to reduce and Recycling e wastes:

The companies should manufacture the devices with a recyclable material and the usage of silicon should be reduced and an alternative should be found for that. Recycling industries should be encouraged so that the waste material can be reduced and the pollution can be under control.

The usage of ferromagnetic materials and phosphorous and chemical material should be completely controlled because they form poisonous gases when they are burnt and spoils the soil when buried in soil.

Recyclable plastic should be used in the electronic devices so that the wastage can decrease a lot and the companies a reuse the same material which greatly cut downs their manufacturing costs.

Waste Management & Recycling Products Screen Shot:

Future Recycling Technology App Development:

The electronic wastage should be reduced otherwise it becomes a serious threat for the nature and they cannot be decomposed. The government should take necessary actions and the people should be made aware regarding the effects caused by electronic wastes.

Download Recycling Technology Innovation Engineering Technical White Paper Presentation. Also See all Final ECE Seminar Reports and Project Paper Presentations.