How to learn basics of diodes and transistors ?

Learning the basics of diodes and transistors involves starting with fundamental concepts in electronics. Begin by understanding the basic principles of semiconductor materials and their behavior in circuits. Diodes are semiconductor devices that allow current to flow in one direction only, from anode to cathode, blocking current in the reverse direction. Understanding how diodes function … Read more

Why is a transistor a better switch than a diode ?

A transistor is often considered a better switch than a diode due to its ability to control current flow more effectively. Unlike a diode, which allows current to flow in only one direction (forward bias) and blocks it in the opposite direction (reverse bias), a transistor can be controlled to switch current on and off … Read more

What is the role of resistance in electrical circuits ?

What is the role of resistance in electrical circuits ? Resistance plays a crucial role in electrical circuits by limiting the flow of electrical current. In any circuit, resistance opposes the flow of electrons, converting electrical energy into heat as current passes through a resistor. This property allows resistors to control the amount of current … Read more

What is the importance of electromagnetic radiation ?

Electromagnetic radiation plays a crucial role across various fields due to its ability to propagate through space without the need for a medium, allowing it to transmit energy and information over vast distances. This property is essential in telecommunications, where radio waves, microwaves, and other forms of electromagnetic radiation are used to transmit signals for … Read more

How does a solenoid engine work ?

A solenoid engine works by using electromagnets to push and pull a plunger or piston within a cylinder. When an electric current is applied to the electromagnets, they create magnetic fields that attract or repel the plunger, causing it to move back and forth. This reciprocating motion can be harnessed to drive mechanical processes or … Read more

Why we put salt and charcoal while earthing ?

Salt and charcoal are used in earthing to enhance the conductivity of the soil. When a grounding system is installed, such as for electrical or telecommunication purposes, it’s crucial to ensure low resistance between the grounding electrode and the surrounding soil. Salt, being hygroscopic, helps to retain moisture in the soil, which improves its conductivity. … Read more

Why is IGBT used in inverter modules of VFD ?

IGBTs (Insulated Gate Bipolar Transistors) are used in inverter modules of Variable Frequency Drives (VFDs) due to their capability to handle high voltages and currents efficiently. In VFDs, IGBTs serve as the switching devices in the inverter stage, where they convert DC voltage from the rectifier into AC voltage with variable frequency and amplitude. This … Read more

Can you swap the line and the load on a circuit breaker ?

In electrical circuits, particularly with circuit breakers, swapping the line and load connections can have significant consequences. Circuit breakers are designed with specific connections for the line (incoming power) and load (outgoing circuit). The line side is where the power supply is connected, typically from the electrical panel or source. The load side is where … Read more