555 timer IC

LEDs are commonly used in electronic circuits, and with the LEDs, you can make many things which are interesting. You’ve probably seen many types of decorative lighting patterns-running lights, festival chasers, or rhythmic blinking effects that instantly stand out. This LED chaser circuit recreates that eye-catching style using a simple combination of the 555 timer…

LEDs are commonly used in electronic circuits as they consume less power, are easy to use, and have a long lifespan. In this tutorial, we will learn how to build an LED ON and OFF circuit using 555 timer IC and BC557.

Before we get started, let's understand the components we will be using in this circuit.

Working with electricity can be a daunting and life-threatening task if you are a beginner in the electronic/electrical field, and things can go very wrong when electricity is not properly handled, which is why safety must come first in order to avoid injury, before starting work on an electric box and AC mains one need to verify that there is no AC leakage voltage.…

In this project we build a boost converter circuit using a 555 timer IC. Boost converter is a non-isolated type of switch mode power supply that is used to step-up the voltage. In other words, it gives a higher output voltage compared to the input voltage. The circuit is very similar to a buck converter we designed for controlling motor and LED strip which is used…

In this article, we will make a buck converter using 555 timer IC and a IRFZ44N N channel MOSFET and use it as LED dimmer circuit or as a motor speed controller circuit. This circuit is basically a simple power electronics DC-DC Buck converter which can be used to step down voltage, its efficiency results in better battery life due to reduced heat generation making it a…

If you are an electronics hobbyist then you must have heard about the 555 timer IC and its 3 popular circuits viz. astable multivibrator, bistable multivibrator, and monostable multivibrator. Apart from these, there are other popular circuits like 555 timer IC as a switch and police hooter that we have talked about previously. Adding to the list,…

If you are a hobbyist or have keen interest in electronics circuits, you must be familiar with 555 timer IC and its three popular circuits - Monostable multivibrator, Astable multivibrator, and Bistable multivibrator. Guess what, we can even use this IC as a switch. This is the type of button that holds its state i.e. on the first press, it switches…

The multivibrator circuit is very popular and useful in the field of electronics, and it’s the most basic circuit that you will know about while learning basic electronics. The multivibrator circuit can be divided into two categories: the first one is known as the monostable multivibrator, and the second one is known as the astable multivibrator. But in this project, we will…

Light fence circuit is used to detect the presence of any human or object in a particular area. The detecting range of Light Fence Circuit is about 1.5 to 3 meters. It’s quite simple to design the circuit using LDR and Op-amp. This portable circuit can work smoothly with a commonly available 9V battery and the alarm sound generated from the buzzer is loud enough to detect…

Capacitors seem all fine till you get to the point where a power supply fails or refuses to perform optimally. And if the problem is noise, there is a simple fix, you just add more capacitors. But that does not solve it. What could be wrong?

The problem arises from the naïve assumption that capacitors (to a large extent) are ‘ideal’ devices, while…

Frequency is defined as number of cycles per second. It can also be defined as reciprocal of total time ‘T’.  In this project we are going to count the number of pulses entering into Port 3.5 of 8051 microcontroller and display it on 16*2 LCD display. So basically we have measuring the frequency of signal at Port 3.5 of 8051. Here we have used AT89S52 8051 chip, and a…

Snubbers are the energy absorbing circuits used to smooth the voltage spikes caused due to the circuit’s inductance. Sometimes, due to the overcurrent, overvoltage and overheating the component gets fail. So, for the overcurrent protection of the circuit we use fuses at suitable locations and for overheating we use heat sinks or fans.

Snubber…