Circuits DIY – Page 347

The temperature sensor is very useful in different ways. It can activate or deactivate any kind of device by observing a temperature. Its ot…

In this tutorial, we are going to control the speed of a DC Fan by using a thermistor. The main aim of a temperature control sensor circuit…

A rain alarm project is a very simple and useful project. It detects the rainwater and triggers the buzzer or alarm. In this tutorial, we ha…

A Mobile Phone charger is a device that charges a mobile phone from an available AC supply source. The Mobile phone chargers available in th…

This tutorial will explain how to control a DC Fan speed by using the temperature sensor (Thermistor). When the temperature rises above the…

A thyristor is a four-layer semiconductor device that conducts current in only one direction. It acts as a bistable switch and only conducts…

This tutorial will explain to you a simple temperature-controlled DC fan. The fan starts above the preset value of temperature and stops whe…

H-bridge is a circuit that allows a current to flow in both directions across the load. These circuits are frequently used in robotics to al…

A Phototransistor is a semiconductor device that is sensitive to light. It alters the current flowing between the emitter and collector, acc…

In this tutorial, we are going to design a burglar alarm circuit. This circuit detects an unauthorized entry of any person into the houses o…

Remote control devices are usually based upon one of two main types of technology: radio frequency (RF) technology or infrared (IR) technolo…

This Tutorial demonstrates the simple and useful security alarm based on Infrared radiation using 555 Timer IC. The circuit uses an Infrared…

This tutorial explains the working of a Push-button. It also explains the use of the push-button circuit. In the tutorial, a push-button con…

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