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What is a Crystal Diode : Construction & Its Working

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A diode is a semiconductor device through which current supplies in one direction only. The initial diodes were crystal diodes which are used as rectifiers in radio kits. In this diode, a weak signal was fed into the crystal material using a very fine wire namely the cat's whisker. The crystal material in the diode removes the high-frequency carrier signal of radio by allowing the elements of the signal through the audio data to approach through clear. The crystal material was packed with … [Read more...]

What is Galvanometer – Construction & Its Working

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After the demonstration of Hans Christian Ørsted in the year 1820 that is, an electric current can turn aside a magnetized needle, the first galvanometer was designed. This device was designed by physicist Johann Schweigger & German mathematician and they named it a multiplier. Basically, a galvanometer includes a needle, connected to a coil so that the coil can move freely in a magnetic field. This field can be created through one or more permanent magnet poles. Once electricity is … [Read more...]

What is a Pressure Transducer : Types & Its Working

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In fluid power circuits, pressure is an essential factor. A pressure transducer is used to change the pressure of a fluid into an electrical signal to check & control the pressure within electronic control systems. Once these transducers are connected to a suitable electrical source then it will generate an electrical output signal like current frequency or voltage which is proportional to the force. There are different kinds of transducers are available which are used to generate linear … [Read more...]

What is Cathode Ray Oscilloscope (CRO) & Its Working

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Karl Ferdinand Braun has researched the concept of the elastic strings of oscillations. He used the CRT (cathode ray tube) as an electron gun through a fluorescent screen. This screen emits a spark of light. So he built the first oscilloscope namely Braun’s electrometer. Karl Braun demonstrated the first model of oscilloscope in the year 1897. Since its development, the CRO (cathode ray oscilloscope) is an essential type of oscilloscope that are mainly used for measuring different electrical … [Read more...]

What is a Rain Sensor : Working & Its Applications

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In everyone’s life, water is a basic need but conserving water as well as its proper maintenance is very important. So here is a rain sensor to detect the rain in the agriculture field & generates an alarm whenever there is rain so that we can take some proper actions to conserve the water as well as crops. Consequently, we can enhance the underground water levels through a recharge technique used underwater. This sensor detects the rain and gives an alert to concerned persons in … [Read more...]

What is a Clap Switch : Circuit & Its Working

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As the name suggests, clap switch is a simple interesting project for beginners and hobbyists. This circuit is used to make the light ON through a clap sound but it can work through any kind of same pitch sound. The essential components used to build this project are electric condenser mic as a sound sensor. The main function of this device is to change the energy of sound to electrical. A 555 timer through a transistor activates the LED and after some time, it will be turned OFF. When this … [Read more...]

What is LCD 16X2 : Pin Configuration & Its Working

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In LCD 16x2, the term LCD stands for Liquid Crystal Display that uses a plane panel display technology, used in screens of computer monitors & TVs, smartphones, tablets, mobile devices, etc. Both the displays like LCD & CRTs look the same but their operation is different. Instead of electrons diffraction at a glass display, a liquid crystal display has a backlight that provides light to each pixel that is arranged in a rectangular network. Every pixel includes a blue, red, green … [Read more...]

What is an Ideal Diode : Working & Its Characteristics

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An ideal diode is one kind of electronic component that includes two terminals and allows the flow of current in only one direction because it has less zero resistance in one way and infinite resistance in another way. The most frequently used type of diode is a semiconductor diode. It is a crystalline part of semiconductor material that includes a PN junction and it is connected to two electrical terminals. The first semiconductor electronic devices are semiconductor diodes. At present, most … [Read more...]

What are Electronic Circuit Symbols – Reference Designators

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There are different kinds of electronic components that are used in different circuits to make different engineering projects as well as electronic devices. These components are represented with electronic circuit symbols within various circuits. At present, circuit symbols & their utilization have been very much standardized. This allows the user to identify the components like wires, semiconductors, batteries, logic circuits, ICs, etc. By using electronic component symbols in circuits, … [Read more...]

What is Pulse Sensor : Types & Its Applications

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Knowing the heart rate data is very helpful while doing exercises, actively studying, etc. But measuring heart rate is a difficult problem. So, a pulse sensor is used to overcome this problem. This sensor is a plug & play heart-rate sensor, utilized by artists, students, athletes, mobile & game developers, makers who desire to know the existing heart-rate data to use in their live projects. This sensor merges a simple optical heart rate sensor through a circuit. This circuit is used … [Read more...]