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Non Contact Voltage Tester

Non-Contact-Voltage-Tester-Circuit-Diagram

sIn this article, we will show you how to design a simple efficient Non Contact Voltage Tester by using transistors.  You can build this circuit by using simple components and test the presence of AC voltages. You need not worry about getting zapped because it is a non contact voltage tester. Table of Contents Introduction …

LED blinker directly with 220v AC

Led flsher 220v

In this 220v blinking led circuit we powered a 3 volt dc led directly with 220V AC. This circuit can be used on special places to identify the main voltages. Capacitor is charged by 470k resistor and diode. The capacitor is charged by Diode IN4007 and 470k resistor. Capacitor is voltages are 35v when capacitor …

Top 10 Simple Electronics Projects for beginner

In this post we are going to publish a list of best mini electronics projects for electronics students. These project are helpful for beginners,I,II and III year engineering students. This list includes the projects from different categories like ICs,Transistors,Thermistors, DTMF, GSM, solar energy, etc. These projects gives a basic idea for our final project. So, …

Electronic Mosquito Repellent Circuit

Mosquito-Repellent-Circuit

This Electronic Mosquito Repellent Circuit is very easy and very simple. This circuit has minimum components repel mosquito. Large number of things like  creams,coils, oils and other things are available in the market to repel mosquito. At the Same time all these replant can become the cause of many diseases like skin cancer and etc. Creams …

water level indicator circuit using Transistor

We generally worry about the wastage of water, when we switch ON the motor and forget to turn it off. The Water Level Indicator employs a simple mechanism to detect and indicate the water level in an overhead tank or any other water container.We have posted already a Water Level Indicator and Controller using IC …

types of resistors and their functions

Different types of resistors with pictures, symbols,function and uses Resistor is an electrical component that regulates or limit the flow of electrical current in a electronic circuit. Resistors can also be used to provide a specific voltage to active a device such as a transistor. It is most commonly used components in all types of …

CD 4017 IC-Decade Counter

CD4017-Pinout

CD 4017 IC-Decade Counter IC CD 4017 is a CMOS Decade counter. This IC is mostly used for low range counting applications. It  counts from 0 to 10 (the decade count).  It can count from zero to ten (0-10) and its outputs are decoded. IC CD 4017 takes less space and saves time to build …