Here are the basic electronics tutorial circuits for beginners. You can find here tutorials on operational amplifiers (opamp), transistor, MOSFETs, 555 timer IC, audio amplifiers and many more.

## Seven Segment Display with Arduino Interfacing 0 to 99 counter

Hey folks, in this article we will see what is a seven-segment display with Arduino Interfacing. How to connect a seven-segment display directly to the Arduino without any decoder IC. Also, we will code Arduino to count Arduino from 0 to 99 on seven segment display. Let’s get started. What is a seven-segment display? A […]

## LM380 Audio Power Amplifier Circuit And it’s Working

The LM380 is an audio power amplifier for consumer application. Its internal gain is fixed to 14dB in order to keep the system cost minimum. A unique input stage allows inputs to be referenced with the ground. The output gets automatically self-centered to one half the supply voltage. The output amplifier is short circuit proof […]

## Peak Detector Circuit using OPAMP

Here is the circuit diagram of a peak detector circuit using opamp. A peak detector circuit is used to determine the maximum (peak) value of an input signal. It stores the maximum value of the input signal for a very long interval of time. In many applications we need to measure the maximum value of […]

## Precision Rectifier Circuit using OPAMP working and applications

The precision rectifier is a type of rectifier that converts the AC signal to DC without any loss of signal voltage. In a precision rectifier circuit using opamp, the voltage drop across the diode is compensated by the opamp. In a Diode voltage drop is around 0.6V or 0.7V. Also, this circuit can be made […]

## Schmitt Trigger Circuit Working and Applications

A Schmitt Trigger circuit is a comparator circuit with some modifications. As compared to a normal comparator circuit the Schmitt trigger circuit has a hysteresis curve. This means that it has two threshold voltages an upper threshold and a lower threshold voltage. In Schmitt trigger hysteresis is created by applying positive feedback to the non-inverting input […]

## Voltage controlled oscillator circuit using LM566 VCO IC

Voltage controlled oscillator circuit is an electronic oscillator circuit whose output frequency is controlled by an input voltage source. By varying the input voltage, we can change the output frequency. A voltage controlled oscillator can produce frequencies ranging from few Hertz to tens of Gigahertz. Voltage to frequency converters is used in frequency modulation FM […]