Category: Circuits

What is Switch Bouncing and How to prevent it using Debounce Circuit
Simply, we can say that the switch bouncing is the non-ideal behavior of any switch which generates multiple transitions of a single input. Switch bouncing is not a major problem when we deal with the power circuits, but it cause problems while we are dealing with the logic or digital circuits. Hence, to remove the bouncing from the circuit Switch Debouncing Circuit is used.

Check out the switch debouncing techniques:

How to Use OV7670 Camera Module with Arduino​
In this tutorial we will interface most widely used camera module OV7670 with Arduino UNO. The camera module OV7670 can be interfaced with Arduino Mega with same pin configuration, code and steps. The camera module is hard to interface because it has large number of pins and jumbled wiring to carry out. Also the wire becomes very important when using camera modules as the choice of the wire and length of the wire can significantly affect the picture quality and can bring noise.

Check out the full tutorial:

Learn about the RC, RL and RLC Circuits here

Simple Relay Circuit

Let’s take a simple example where we will be turning on an AC lamp (CFL) by using a relay switch. In this relay circuit we use a push button to trigger a 5V relay, which in turn, complete the second circuit and turn on the lamp.

Find the circuit details here:

Voltage Divider Circuit

A Voltage or Potential Divider Circuit is commonly used circuit in electronics where an input voltage has to be converted to another voltage lower than then the original. This is very useful for all analog circuits where variable voltages are required, hence it is important to understand how this circuit works and how to calculate the values of the resistors required to make a voltage divider circuit to output the desired voltage.

Simple Tilt Sensor Switch Circuit

A tilt sensor is a sensor which opens and closes an electrical circuit when it is inclined beyond at certain angle. It can be used in tilt prevention devices, an alarm circuit and in many DIY projects. There are different types of Tilt sensor modules, for sensing the tilt the module can have a ball switch or mercury switch. In this circuit, we are using a Mercury-based tilt sensor.

Simple Two Way Intercom Circuit

In this tutorial we are going to build a very Simple Intercom Circuit using which you can communicate two ways locally within your house or school. This project brings in the childhood memory of using matchboxes with thread to build a simple telephone. So now let’s take it to the next level by building an electronic circuit (amplifier) to transmit voice from one end to another end.

Frequency Divider Circuit

Frequency Dividers are the circuits which divide the input frequency by n (any integer number), means if we provide some signal of frequency ‘f’ then the output will be the divided frequency ‘f/n’. Frequency dividers are very useful in analog as well as digital applications. Here we are building the circuit to divide the frequency by 2 or 4.

Electrical and Electronics Calculators

These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. 

Op Amp Gain Calculator

LM317 Resistor/Voltage Calculator

Resistors in Parallel Calculator

Resistors in Series Calculator

Capacitor Value Calculator

555 Timer Astable Circuit Calculator

555 Timer Monostable Calculator

Voltage Divider Calculator

Ohm’s Law Calculator

Temperature Controlled DC Fan using Thermistor

In this tutorial we are making a Temperature controlled DC fan using Thermistor, as it starts above the preset level of temperature and stops when the temperature return to normal condition. This whole process is done automatically.