Electronics and Electrical Engineering Design Projects

Featured electronics and electrical engineering design projects.

Featured Projects by Members

  • Figure:1 Circuit Diagram of Airflow Detector Circuit

    Air Flow Detector Circuit

    Posted May 28, 2014 By Sudheer Gupta
    Air flow detection is often necessary in many applications or systems where it is necessary to detect the presence of air to have a descriptive picture of the proper functioning of the systems. Principle Behind Air Flow Detector Circuit Here, a simple air flow detector circuit is developed which uses a resistance temperature detector as the basic component. This circuit is based on two…
  • Figure:2 230v LED Driver Circuit Diagram

    230 V LED Driver Circuit

    Posted May 21, 2014 By Sudheer Gupta
    Here we design a simple circuit driving a series of LED from 230V AC. This is accomplished using a capacitor based power supply. This is a low cost and efficient circuit and can be used at homes. 230 V LED Driver Circuit The basic principle behind this circuit is transformer less power supply. The main component is the X-rated AC capacitor which can reduce the AC voltage to a suitable…
  • Figure:3 Password based Door Lock System Circuit Diagram

    Password Based Door Lock System using 8051 Microcontroller

    Posted May 14, 2014 By Sudheer Gupta
    This system demonstrates a circuit named Password based Door Lock System wherein once the correct code or password is entered, the door is opened and the concerned person is allowed access to the secured area. After some time, the door would close. Again if another…
  • Figure:4 Celsius Scale Thermometer Circuit Diagram

    Celsius Scale Digital Thermometer using 8051 Microcontroller

    Posted May 07, 2014 By Sudheer Gupta
    The circuit works on the principle of analog to digital conversion. The temperature is sensed by a analog temperature sensor and this analog value is converted to a digital value using an ADC. A microcontroller then processes the digital signal to display the temperature reading in Celsius on the display screen. *Circuit Diagram of Celsius Scale Thermometer using AT89C51 and…
  • Figure:5 Poster Presentation of App

    First Step Android App

    Posted Apr 30, 2014 By James Faraday
    The first step the app provides users a comfortable and anonymous route through which they can pursue self-assessment and mental health resources. It utilises the Goldberg Depression Questionnaire which was developed by Dr Ivan Goldberg, MD. The results of this questionnaire are then used to intelligently provide resources based on the weight of different answers for different questions. For…
  • Figure:6 Printed Circuit Board we designed.

    Emerson Oven Control System

    Posted Apr 22, 2014 By James Faraday
    To do this we made use of an Arduino micro-controller board, Labview, our own custom designed printed circuit board, a relay designed to handle 20 Amps, and a switch created using a bipolar junction transistor (BJT). Picture of our completed PCB: Picture of Ultiboard simulation of PCB: Picture of the prototype Labview user interface as well as test software: Picture…
  • Figure:7 5 Channel IR Remote Control System - Transmitter Circuit

    5-Channel IR Remote Control System

    Posted Apr 14, 2014 By Sudheer Gupta
    This article is aimed to design and demonstrate a simple 5 channel remote control system to drive five loads. The input signals or the commands are sent from a transmitter using IR transmission and received by the IR receiver, processed and used to drive the loads. Principle behind the Circuit The circuit works on the principle of IR communication. IR communication involves transmitting…
  • Figure:8 Circuit Diagram of Digital Voltmeter using ICL7107

    How to Build Digital Voltmeter Circuit using ICL7107

    Posted Apr 08, 2014 By Sudheer Gupta
    A voltmeter is an instrument measuring the potential difference between two points. A typical digital voltmeter consists of a analog to digital converter and a digital display. Here we design a analog to digital converter working as a digital voltmeter using a low power three and half digit A/D converter ICL7107 having internal 7 segment decoders, display drivers, a reference and a clock. h2….
  • Figure:9 AutoCAD Layout

    Make LED Screen With Addressable Led Strips By SD Card Controller

    Posted Apr 02, 2014 By Mal Donald
    Material Bill: Controller: GECOSD8P-8192 (8Port SPI Signal output) QTY: 1pc http://www.gree-leds.com/productshow.asp?ArticleID=X8Q297866R Power supplier: 300Watt (5V 60A) QTY:6pcs Digital led strip: you can choose base on Pixel distance by…
  • Figure:10 3-D graph showing the various carriers in a OFDM signal

    Analog Solutions for the PAPR Problem in OFDM

    Posted Mar 26, 2014 By Kalpana Manickavasagam
    Recently, a worldwide convergence has occurred for the use of Orthogonal Frequency Division Multiplexing (OFDM) as an emerging technology for high data rates. In particular, many wireless standards (Wi-Max, IEEE802.11a, LTE, DVB) have adopted the OFDM technology as a mean to increase dramatically future wireless communications. Peak to Average Power Ratio (PAPR) has been a major problem in…

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