Two Transistor Amplifier

Class A power amplifier circuit

For most systems single transistor amplifier does not provide sufficient gain or output impedance matching. The solution is only to combine multiple stages of amplification. In this amplifier circuit we are going to shows a simple two transistor amplifier. In the single transistor amplifier circuit we have made a very simple amplifier with one transistor, […]

Single Transistor Amplifier Circuit

single transistor amplifier

An audio amplifier is a device which multiply an applied input signal amplitude to a level that may be much higher than the input signal. The input is given in the form of an audio or a music. The amplifiers are classified into classes like class A, class B, class AB, class C and class […]

Non Contact Voltage Tester

non connact ac test

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

Top 10 Electronics Circuits

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… Top 10 Simple Electronics Projects […]

Electronic 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 […]