What is Resistor?

Definition of Resistor A resistor is a passive element in a circuit which provides resistance to the flow of current. Resistance is a measure of the opposition to the flow of current in a resistor. The larger a resistor’s resistance, the greater the barrier against the flow of current. There are many different types of … Read more

Alternating Current Definition Measurements and Advantages of AC

Definition of Alternating Current Alternating current changes its direction at a periodic interval. The magnitude of the current may or may not change at every instant but the current must alter its direction periodically. Alternating current is represented by a periodic function. The waveform of the current may sinusoidal, square, triangular or sawtooth type etc. … Read more

Electrical Impedance

The current lags 90° (electrical) in respect of the applied voltage in a purely inductive circuit. The current leads 90° (electrical) in respect of the applied voltage in a purely capacitive circuit. The current does not lag as well as not lead in respect to the applied voltage in a purely resistive circuit. In a … Read more

Electrical Engineering Calculators

We have electrical engineering apps and tools which can be useful for study and problem solving. Ohm’s Law Calculator Ohm’s Law is a fundamental theory of electrical engineering that deals with the relationship between current, voltage and resistance. Our Ohm’s law calculator allows you to calculate the voltage, resistance, or current. Simply type in the … Read more

Lamps: Types and Comparison

A lamp is an artificial source of light. Over the last 100 years, lamps have become an integral part of our daily lives. Various types of lamps are available on the market. These lamps differ in their operating principle, materials used, and importantly – their energy efficiency. The different types of lamps include: Incandescent Lamps … Read more

Pulmonary Function Measurements

Respiration In a biological process exchange of gases, take place. Diaphragm acts as physiological pump, it creates alternative positive and negative pressure inside the sealed chamber named Thoracic Cavity. Lungs are the elastic bags. They cause the air to be sucked in and out of lungs within the chamber. Lungs are connected to external air … Read more

Respiraton Rate Measurement

Respiration rate gives details on oxygen intake and exhalation of carbon dioxide. Muscular action controls the breathing action resulting in increase of lung volume. The primary function of respiratory system is to supply oxygen and remove carbon dioxide from blood tissues. The choice of method to measure respiration rate depends on application of transducer. Some … Read more

Spirometer Working Principle of Spirometer

Spirometer is a biomedical device which measures the lung capacity and lung volume. The constructional feature of a spirometer is very simple. It mainly consists of a container which collects gas. To understand the basic working principle of a spirometer, we need to look into the basic construction of a spirometer. The water-sealed model is … Read more

Power Line Carrier Communication | PLCC

Also called wired wireless, the Power Line carrier Communication (PLCC) has evolved a long way from its earliest use in metering at remote locations to its present day applications in home automation, high speed internet access, smart grid etc. In the early 20th century the power companies used telephones as the medium of communication for … Read more

pH Measurement

Partial pressures of hydrogen, carbon dioxide and oxygen are measured with blood gas analyzers. They determine the acid base balance in the body. When pH value goes below 7.35 it indicates respiratory acidosis and respiratory failure. It can be corrected using ventilator. At the same time when pH increases above 7.60 respiratory alkalosis occur. Here … Read more