An LMP switch, also known as a Low Voltage Motor Protection switch, is a device used in electrical systems to protect motors from damage due to overload or short circuits. It monitors the electrical current flowing to the motor and automatically disconnects the power supply if the current exceeds a preset threshold. This helps prevent … Read more
Why transistor are called as current controlled devices ? Transistors are often referred to as current-controlled devices because their output current (collector current in bipolar junction transistors or drain current in field-effect transistors) is primarily controlled by the base current (in BJTs) or gate-source voltage (in FETs). In bipolar junction transistors (BJTs), the base current … Read more
Capacitors refer to electronic components designed to store electrical energy temporarily. They consist of two conductive plates separated by an insulating material (dielectric). Capacitance, on the other hand, is the property of a capacitor that determines its ability to store electrical charge when a voltage is applied across its terminals. In simpler terms, capacitors are … Read more
A generator produces electricity by converting mechanical energy into electrical energy through the process of electromagnetic induction. This involves rotating a coil of wire within a magnetic field, which induces a flow of electric current in the wire. The mechanical energy required to rotate the coil can come from various sources such as an internal … Read more
Blocking capacitors are used in common-emitter (CE) amplifiers to prevent DC components of the input signal from entering the amplifier stage while allowing AC signals to pass through. These capacitors are placed in series with the input and sometimes the output of the amplifier. By blocking the DC component, they ensure that the biasing of … Read more
Power transformers do not behave as low-pass filters. A power transformer is designed to transfer electrical energy from one circuit to another through electromagnetic induction. It consists of primary and secondary windings coupled by a magnetic core. The primary function of a power transformer is to change voltage levels (step up or step down) while … Read more
A relay and an optocoupler serve similar functions in electrical circuits but operate on different principles. A relay is an electromechanical device that uses an electromagnetic coil to mechanically switch contacts. It is used to control high-power circuits with low-power signals, providing electrical isolation between control and load circuits. In contrast, an optocoupler, also known … Read more
The fabrication process for Bipolar Junction Transistors (BJTs) is less commonly used and more costly compared to Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) primarily due to differences in their structural complexity and manufacturing techniques. BJTs require more intricate processes involving doping and precise alignment of multiple layers to create the junctions necessary for their operation. This complexity … Read more
In physics, the full form of LED is “Light Emitting Diode.” LEDs are semiconductor devices that emit light when an electric current passes through them. They are widely used in various applications such as indicators, displays, lighting, and more due to their efficiency and durability compared to traditional light sources. LCD stands for “Liquid Crystal … Read more
Resistors serve multiple purposes in electronic circuits, regardless of their specific type or application. One primary purpose of a resistor is to limit the amount of current flowing through a circuit. By controlling the flow of electrons, resistors help prevent components from receiving excessive current, which could lead to overheating, damage, or malfunction. This current-limiting … Read more