In this project, I will show you how to design Police Lights using 555 Timer IC and CD4017 Counter IC. This circuit simulates the police car lights by alternately flashing the LEDs. This circuit flashes Red LEDs for three times and Blue LEDs for three times and this flashing action repeats continuously. Introduction Police Lights are […]
Simple IR Audio Link Circuit
In this project, I will explain you how to design a Simple IR Audio Link circuit, which is used to transmit audio signals wirelessly. This IR audio link is able transmit audio signals for short distances. The audio signal which is to be transmitted is applied at the base of the transistor in Transmitter section. An […]
Unbiased Electronic Dice with LEDs
In this project, I will show you how to make a simple Unbiased Electronic Dice with LEDs. This project consists of 6 LEDs, a 555 Timer IC and a 4017 Decade Counter IC and produces a random number between 1 and 6 by lighting up the corresponding LED. Introduction Playing with dice is an age […]
Top 7 Best Gaming Earbuds 2019 – Ultimate Earbud Reviews & Buyer’s Guide
Bulky ear cup headphones are both expensive and tiresome to wear for longer duration of time. Hence earbuds are becoming the common go to in the gaming fraternity.They are comfortable to use and come in great budget friendly prices. Though usually used by audiophiles, earbuds are fast gaining prominence among gamers for their incredible power […]
Tunnel Diode – Working, Characteristics, Applications
What is a Tunnel Diode? A Tunnel Diode is a heavily doped p-n junction diode. The tunnel diode shows negative resistance. When voltage value increases, current flow decreases. Tunnel diode works based on Tunnel Effect. The following image shows the symbol of a Tunnel Diode. Leo Esaki invented Tunnel diode in August 1957. Therefore, it […]
What is a Photodiode? Working, Characteristics, Applications
What is a Photodiode? It is a form of light-weight sensor that converts light energy into electrical voltage or current. Photodiode is a type of semi conducting device with PN junction. Between the p (positive) and n (negative) layers, an intrinsic layer is present. The photo diode accepts light energy as input to generate electric […]
PWM Based DC Motor Speed Control using Microcontroller
In this project, I will show you how to generate a PWM signal using 8051 Microcontroller and also a PWM based DC Motor Speed Control using Microcontroller. Introduction It is important to control the speed of DC motor in many applications, where precision and protection are essential. Here we will use a technique called PWM […]
Bipolar LED Driver Circuit
In this project, I will show you how a Bipolar LED Driver Circuit can be implemented using 8051 Microcontroller. A Bipolar LED is different from a regular Bi-color LED in the sense that a Bipolar LED has only two leads whereas a regular Bi-color LED has three leads. Introduction A Bi color LED is a […]
RF Remote Control Circuit for Home Appliances
In this project, I will show you how to design an RF Remote Control Circuit for Home Appliances. Using this circuit, you can control simple home appliances with the help of an RF Remote control. Introduction We have already learned in an earlier post about how design IR Remote Control for Home Appliances. But, have you […]
Top 10 Best Soldering Stations in 2018 Reviews
Being a DIY aspirant or an engineer it’s quite difficult to solder the small components like resistors, capacitors, and transistors on a circuit board. So, the best affordable solution to tackle all these complex tasks is by having Soldering Station with you. Soldering iron station is a hand-held device used to ensemble the hardware components […]