Basics

An Infrared light-emitting diode (IR LED) is a special purpose LED emitting infrared rays ranging from 700 nm to 1 mm wavelength. Different IR LEDs may produce infrared light of differing wavelengths, just...

A miniature circuit breaker (MCB) automatically switches off the electrical circuit during an abnormal condition of the network means in overload condition as well as faulty condition. Nowadays we use an MCB in...

An operational amplifier or op-amp is simply a linear Integrated Circuit (IC) having multiple-terminals. The op-amp can be considered to be a voltage amplifying device that is designed to be used...

Sometimes, after rains, the air feels moist. The water seems to have suspended in the air. However, in certain AC’s you click some buttons and the atmosphere brightens up. How and...

Cell phone jammer is an electronic device that blocks transmission of signals between a cell phone and a base station. By using the same frequency as a mobile handset, the cell phone...

The 555 timer IC is an integral part of electronics projects. Be it a simple project involving a single 8-bit micro-controller and some peripherals or a complex one involving system on...

A decade counter is very common in today’s electronics. Most commonly available as IC CD7490, contains multiple flip flops to convert BCD-to-decimal and is incorporated as part of larger integrated circuits. A decade...

A seven-segment display is commonly used in electronic display device for decimal numbers from 0 to 9 and in some cases, basic characters. Use of light emitting diodes (LEDs) in seven...

Digital computers have enhanced human capability in major walks of life and are still penetrating to diverse areas of human endeavor. Their pervasiveness is due to their ability to solve problems...

Before we get into what a GSM module is, let us get our fundamentals right and understand what GSM and GPRS are. A GSM module or a GPRS module is a chip or...