The tolerance of a resistor refers to the allowable deviation in its resistance value from the specified nominal or ideal resistance. It indicates the range within which the actual resistance of the resistor can vary from the stated nominal value. Tolerance is expressed as a percentage of the nominal resistance value and is typically indicated … Read more
A Bipolar Junction Transistor (BJT) and a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) are both types of transistors, but they operate on different principles and have distinct characteristics. A BJT is a current-controlled device that relies on the movement of charge carriers (electrons and holes) within a semiconductor material. It consists of three layers of semiconductor material … Read more
What Happens If Neutral Wire Touches an Earth Wire? In electrical systems, the neutral and earth wires serve distinct but essential purposes. The neutral wire provides a return path for the current back to the source, whereas the earth wire (also known as the ground wire) is primarily used for safety purposes, offering a path … Read more
Transistors cannot replace capacitors and resistors in most circuit applications because they serve different fundamental purposes and operate based on distinct principles. Capacitors store electrical charge and are used for energy storage, filtering, coupling signals, and timing circuits. Resistors, on the other hand, control the flow of electric current, dissipate power as heat, set voltage … Read more
A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is typically considered a unidirectional device. This means that it conducts current primarily in one direction between its drain and source terminals, depending on the polarity of the applied voltage and the mode of operation (enhancement or depletion). In its standard operating mode, the MOSFET conducts current from drain to … Read more
How do we calculate heat produced in a resistor ? The heat produced in a resistor, also known as power dissipation, can be calculated using the formula P=I2⋅RP = I^2 cdot RP=I2⋅R, where PPP is the power in watts (W), III is the current in amperes (A), and RRR is the resistance in ohms (Ω). … Read more
In a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), the drain and source terminals can be interchangeable in terms of physical placement on the semiconductor die. This flexibility arises because the MOSFET’s operation is primarily controlled by the voltage applied to the gate terminal relative to the source terminal. The drain and source are differentiated by their functions: … Read more
Capacitors require a resistor to discharge because they store electrical energy in the form of an electric field between two conductive plates separated by a dielectric material. When a capacitor is charged with a certain voltage, it holds onto this charge until a path is provided for the electrons to flow and equalize potential with … Read more
In rectifiers, a resistor is often used as a load to simulate the typical resistance that the rectifier circuit will encounter in practical applications. This load resistance serves several purposes. Firstly, it helps to stabilize the operation of the rectifier by providing a predictable load current that the rectifier must supply. This allows the rectifier … Read more
Inductors and capacitors serve distinct yet complementary functions in electrical circuits. Inductors primarily function to store energy in the form of a magnetic field when current flows through them. They resist changes in current and can smooth out variations in voltage or current by storing and releasing energy. Inductors are crucial in applications where filtering, … Read more