Transistor Definition- Transistors amplify current, the small output current from a logic IC can be amplified so that a light, relay or other high-current system can be controlled. A resistor is used in many circuits to convert the variable current into a variable voltage, so the transistor is used to amplify voltage. A transistor can be used as… Read More »

Ohm’s Law – Definition, Formula, Applications

Ohm’s Law- The relationship between Voltage, Current and Resistance was first discovered by the German physicist Georg Ohm in any DC electrical circuit. Georg Ohm observed the electrical current flowing through a fixed linear resistance at a constant temperature to be directly proportional to the voltage applied through it, and also inversely proportional to the resistance. This Voltage,… Read More »

Steam Turbine

Steam Turbine In a power generating plant, the steam turbine is a favorite primary mover. The capability of the steam turbine can be from 5 megawatts – 2000 megawatts. Working Principle of Steam Turbine- A practical turbine normally has two important parts nozzles and blades. The nozzle is a tool installed at a turbine’s steam inlet. The high-temperature, high-pressure… Read More »

Thermal Power Plant

Thermal Power Plant- A thermal power plant is a power plant that converts heat energy into electricity. The most standard source of electricity is the thermal power plant or heat power station. Thermal power plant is also known as coal thermal power plant and steam turbine power plant. Theory of Thermal Power Station- The thermal power plant or… Read More »

Thevenin Theorem

According to Thevenin theorem an active circuit between two load terminals can be considered as an individual voltage source. This source’s voltage would be open circuit voltage across terminals, and the source’s internal impedance is the equivalent circuit impedance across terminals. Let’s take a simple example of a resistive active circuit as shown below to understand Thevenin Theorem.… Read More »