Electrical4U What are Voltages in Series? A series circuit is defined as a connection in which two or more electrical components are linked in a chain, so only one path exists for the charge to flow. Voltage, or potential difference, is the difference in electric potential between two points of a circuit. This article discusses voltage … Read more
What is a Magnetic Field? A magnetic field is defined as a force field created by moving electric charges. It influences materials like iron and can propagate without any medium, even in a vacuum. Magnetic fields can store large amounts of energy, as can an electric field. This makes them essential in electromechanical devices like … Read more
Major Parts of Wind Turbine Tower of Wind Turbine The tower supports every other part of a wind turbine. It raises the rotor high enough that the blade tips stay clear of the ground during rotation, and it must be tall enough to reach the stronger winds that blow higher above the ground. The required … Read more
What is Discharging a Capacitor? Discharging a capacitor means releasing the stored electrical charge. Let us look at an example of how a capacitor discharges. We connect a charged capacitor with a capacitance of C farads in series with a resistor of resistance R ohms. We then short-circuit this series combination by closing the switch.As … Read more
Electric potential at a point in an electric field is defined as the amount of work to be done to bring a unit positive electric charge from infinity to that point. Similarly, the potential difference between two points is defined as the work required to bring a unit positive charge from one point to the … Read more
Metals like silver, copper and aluminum have many free electrons, making them good conductors with low resistance. However, their resistivity changes with temperature. Generally, metals have higher electrical resistance when the temperature increases, while non-metallic substances usually show decreased resistance with higher temperatures. Take a piece of pure metal, cool it to 0°C using ice, … Read more
The parallel adder circuit built by cascading full adders is limited by the delay associated with carrying propagation (more on this in the article “Parallel Adder”). The more bits to be added, the longer this delay becomes. The design of a Look Ahead Carry Adder circuit removes this delay problem. Working Principle of Look Ahead … Read more
What is a Voltage to Current Converter (V to I Converter)? A voltage to current converter (V to I converter) is defined as an electronic circuit that converts an input voltage into a proportional output current. The motivation comes from instrumentation practice. For instrumentation circuits, DC current is preferred for creating an analog representation of … Read more
What is a Voltage Sensor? A voltage sensor measures and monitors voltage levels within an object, detecting either AC or DC voltage. It takes in the voltage itself and outputs various forms such as switch states, analog voltage signals, current signals or audible signals. Sensors are devices that sense, identify and react to certain types … Read more
We define magnetic flux as the total number of magnetic lines of force in a magnetic field. If we place an imaginary isolated north pole in a magnetic field, it will experience a repulsive force from the north pole and an attractive force from the south pole of the magnet. These forces will cause the … Read more