rectifier, device that converts alternating electric current into direct current. It may be an electron tube (either a vacuum or a gaseous type), vibrator, solid-state device, or mechanical device. Direct current is necessary for the operation of many devices such as laptop computers, televisions, and certain power tools.

Lenz’s Law states that the induced e.m.f. will be directed such that the current which it causes to flow opposes the change that is producing it. The induced e.m.f. is always present even when the conductor is not in a complete circuit. BUT there will only be an induced current flowing only if the set-up is in a complete circuit. Example:

But the transformer in which a part of windings is common to both primary and secondary is called ‘Autotransformer’. High efficiency autotransformer with 6%, 4%, 2% tap settings (photo by Legend Power) In Autotransformer two windings are not only magnetically coupled but also electrically coupled.

An electronic component that resists the flow of current in an electronic circuit. Resistors are often made out of chunks of carbon or thin films of carbon or other resistive materials. They can.

Step-up Transformer. A transformer in which the output (secondary) voltage is greater than its input (primary) voltage is called a step-up transformer. The step-up transformer decreases the output current for keeping the input and output power of the system equal.

electricity, phenomenon associated with stationary or moving electric charges. Electric charge is a fundamental property of matter and is borne by elementary particles. In electricity the particle involved is the electron, which carries a charge designated, by convention, as negative.

Transistor: A transistor is a basic electrical component that alters the flow of electrical current. Transistors are the building blocks of integrated circuits , such as computer processors, or CPUs . Modern CPUs contain millions of individual transistors that are microscopic in size.

Figure 1. Pad mounted transformer for electrical distribution. A transformer is an electrical device that uses electromagnetic induction to pass an alternating current (AC) signal from one electric circuit to another, often changing (or "transforming") the voltage and electric current.

What does utility software actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

Software is a generic term used to describe computer programs that run on PCs, mobile phones, tablets, or other smart devices. Software is often used to describe all the functional aspects of a computer that do not refer to its physical components (hardware).

system software, an operating system and the utility programs that come with it, such as those to compile (translate) programs into machine code and to load them for execution. System software controls a computer ’s internal functioning and peripherals such as monitors, printers, and storage devices.

ˈpeg. Synonyms of peg. 1. a. : a small usually cylindrical pointed or tapered piece (as of wood) used to pin down or fasten things or to fit into or close holes : pin, plug. b. British : clothespin. c. : a predetermined level at which something (such as a price) is fixed.