Electronics and Electrical Engineering Projects

Featured electronics and electrical engineering design projects.

TAGS: Engineering

  • Bike Turning Signal Circuit

    Posted Thursday, October 16, 2014
    The objective of this circuit is to indicate left or right turn for bike/vehicle. It is used to indicate left turn or right turn for a motor bike or vehicle... More
  • RFID Based Attendance System using Microcontroller

    Posted Friday, September 12, 2014
    This RFID based attendance system circuit helps to take the attendance. Here, each person is issued an RFID tag. Controlling unit is in the institute. Whenever the card is placed... More
  • Non Contact Tachometer Circuit using 8051 Microcontroller

    Posted Tuesday, July 01, 2014
    Here we designed a simple non contact tachometer using microcontroller which can measure speed with an accuracy of 1 rev/sec.More
  • How 100W Subwoofer Amplifier Circuit Works?

    Posted Wednesday, June 04, 2014
    Here we designed a subwoofer amplifier producing audio signals at low frequencies from 20 Hz to 200Hz and with an output power of 100W, used to drive a 4 ohm load.More
  • Password Based Door Lock System using 8051 Microcontroller

    Posted Wednesday, May 14, 2014
    Here is the circuit diagram of Electronic code lock system using 8051 microcontroller. It is very useful at residential places to ensure better safety.More
  • Bipolar LED Driver Circuit

    Posted Tuesday, May 06, 2014
    This is the circuit diagram of bipolar LED Driver using microcontroller. Here we use an LED which has a forward voltage drop of 2.2V and hence can be biased using... More
  • 8 Candidate Quiz Buzzer using AT89C51 Microcontroller

    Posted Tuesday, April 15, 2014
    This is an automatic quiz buzzer system in which if more than one team presses the buzzer, the accurate delay time is taken into account and the number is displayed.More
  • How to Build Digital Voltmeter Circuit using ICL7107

    Posted Wednesday, April 09, 2014
    Here, we designed an analog to digital converter circuit, working as a digital voltmeter using a low power three and half digit A/D converter ICL7107 having internal 7 segment decoders... More
  • BCD to Seven Segment Display Decoder Circuit

    Posted Saturday, April 05, 2014
    A display decoder is used to convert a BCD or a binary code into a 7 segment code used to operate a 7 segment LED display. Here we design a... More
  • 150W Power Amplifier Circuit

    Posted Wednesday, March 19, 2014
    Here we designed a power amplifier circuit using push pull class AB configuration to derive a power of 150W to drive a load of 8 Ohms (speaker). More
  • FM Transmitter Circuit

    Posted Wednesday, March 19, 2014
    Here is a wireless FM Transmitter which uses RF communication to transmit the medium or low power FM signal with the maximum transmission range of around 2 km.More
  • Electronic Mosquito Repellent Circuit

    Posted Wednesday, February 26, 2014
    This is a simple electronic mosquito repellent circuit which produces ultrasound of frequency 20-38 kHz and scare away mosquitoes from home.More
  • Automatic Doorbell with Object Detection Circuit

    Posted Saturday, February 02, 2013
    The circuit operates using a pair of ultrasonic transmitter and receiver modules which are used to detect the person. When the person is detected (the person is in the front... More
  • 12V DC to 240V AC inverter

    Posted Tuesday, April 17, 2012
    This project is designed to be used with a 12v battery. This voltage is boosted to about 220-250V AC. I am planning to create a capacitor charger out of this... More