Suggest some minor project of electronic in BE?

Answer 1

There are literally thousands of projects you could do. It depends on your level of schooling (i.e freshman or senior). Assuming BE is Bachelor's of Engineering, and also assuming you are a freshman or sophomore the following are good project ideas (audio related):

1. headphone amplifier - CMOY type, small, great for using good headphones with portable music players. uses a good audio OP Amp (like Analog Devices OP275).

2. unbalanced to balanced audio transmitter and balanced to unbalanced audio receiver - great for transmitting audio signals over great distances while eliminated any noise picked up on the wires. The circuit inverts the audio signal 180 degrees and transmits the in-phase and out-of-phase signals on a pair of wires, the receiver inverts the out-of-phase signal providing 3dB of gain and eliminating any picked up noise by 70dB or more.

3. video switched 120V outlet - input is the output video signal from a tv, when a video signal is present, the circuit energizes a relay to give power to an amplifier or powered speaker system. with this the audio system will turn on/off with the tv.

4. an alternatve to #3 is a circuit that senses an audio signal instead - common auto turn-on circuit in modern sub amplifiers.

5. solar panel battery charger - intelligent battery charging circuit

6. HDTV antenna booster amplifier

7. UHF/VHF channel modulator - accepts any video signal over RG59/RG6 coaxial cable and modulates it to a cable channel in either the UHF or VHF band, while allowing standard cable operation. example - security camera at the front door can be viewed from any TV in the house on channel 54. If the product can allow for bi-directional signals and HDTV though Cable you'd have a product that you could market.

There are two types of projects for an EE - analog projects and digital projects. There is a huge difference between the two. I have a BSEE with an emphasis in analog/digital communications and power systems. I did hundreds of projects in school, usually two at a time every week. Some projects lasted months, and each week we worked on a new part of the project (broken up into different parts that could be independently tested).

Finally, the type of project you can do is dependent on the equipment you have on hand - i.e. oscilloscope, network analyzer, soldering iron, etc. Your project will be a success if the design is solid. A good design requries a deep understanding of the why's and how's. Sedra/Smith Microelectronic Circuits is a comprehensive text book covering the field of Electrical Engineering as it relates to analog and digital circuits. If you want to learn more, buy that book!