Electrical Electronics 
Diodes play a crucial role in modern electronics, enabling us to control and drive electrical currents precisely. With various diodes available, each designed to serve specific purposes, it’s essential to understand their unique characteristics and applications. In this Electrical and Electronics Engineering article post will delve into the world of diodes and explore the top … Read more
A Light Emitting Diode (LED) is a semiconductor device that emits light when current flows through it. It is a type of diode that converts electrical energy into light energy. The LED symbol consists of an arrowhead pointing away from the device, indicating the direction of light emission. It is similar to a regular diode … Read more
A Zener diode is a specialized type of diode that is designed to operate in a reverse breakdown region, called the Zener breakdown, to maintain a nearly constant voltage across its terminals. It is used primarily for voltage regulation and protection in electronic circuits. When the Zener diode is reverse-biased, and the applied voltage exceeds … Read more
A tunnel diode is a specialized semiconductor device with a unique negative resistance characteristic, allowing it to switch between states rapidly. It operates based on the principle of quantum tunneling, where electrons can pass through energy barriers even when classically forbidden. The tunnel diode symbol consists of two terminals connected by a curved line with … Read more
A varactor diode, also known as a varicap diode or voltage-variable capacitor, is a special type of diode that exhibits a varying capacitance with changes in applied voltage. The symbol for a varactor diode consists of a diode symbol with curved lines parallel to the diode’s horizontal line. The curved lines represent the variable capacitance … Read more
A Schottky diode is a type of diode that utilizes a metal-semiconductor junction, typically composed of a metal (such as aluminum or platinum) and a semiconductor material (such as silicon or gallium arsenide). It is characterized by its low forward voltage drop and fast switching speed. The Schottky diode symbol consists of a straight line … Read more
A photodiode is a semiconductor device that converts light energy into electrical current. It operates in reverse bias, meaning the cathode is connected to a higher voltage than the anode. When light photons strike the diode, electron-hole pairs are generated in the depletion region, resulting in a photocurrent flow. Photodiodes, such as optical communication systems, … Read more
A laser diode is a semiconductor device that emits coherent and monochromatic light through the process of stimulated emission. It comprises a p-n junction with additional layers to create a laser cavity. When a forward voltage is applied, it allows current to flow across the junction, stimulating the emission of photons. These photons then undergo … Read more
A current regulator diode, also known as a constant current diode or current limiting diode, is a semiconductor device that maintains a constant current flow regardless of the applied voltage. It is primarily used to provide a stable current source in various applications. The symbol for a current regulator diode is similar to a standard … Read more
A PN junction diode is a two-terminal semiconductor device formed by the junction of P-type and N-type regions. The P-type region has an excess of positive charge carriers (holes), while the N-type region has excess negative charge carriers (electrons). The junction between the two regions forms a depletion zone where free charge carriers are depleted. … Read more