PV fuses are utilised to protect solar power gathering equipment against overcurrents, reserse currents and short circuits that can occur within alternative energy gathering PV string installations. Photovoltaic (PV) fuses vary in a number of different ways including fuse speed, voltage and amperage rating, breaking capacity and their physical…[Leia mais]

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. Ferromagnetic materials can be divided into magnetically…[Leia mais]

Paint is any pigmented liquid, liquefiable, or solid mastic composition that, after application to a substrate in a thin layer, converts to a solid film. It is most commonly used to protect, color, or provide texture. Paint can be made or purchased in many colors—and in many different types. Paint is typically stored, sold, and applied as a l…[Leia mais]

Vibration meter is an instrument used to directly indicate the peak value, peak-to-peak value, average value or root mean square value of vibration quantities such as displacement, velocity, acceleration and acceleration derivative. The main parts of this instrument are integral and differential circuit, amplifier circuit, voltage detector and…[Leia mais]

The paper box is a three-dimensional shape, which is composed of a polyhedron formed by moving, stacking, folding, and surrounding several surfaces. The faces in the three-dimensional composition play the role of dividing the space in the space. If the faces in different parts are cut, rotated, and folded, the obtained faces have different…[Leia mais]

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer’s core, which induces a varying electromotive force across any other coils wound around the same core.…[Leia mais]

A spray dryer takes a liquid stream and separates the solute or suspension as a solid and the solvent into a vapor. The solid is usually collected in a drum or cyclone. The liquid input stream is sprayed through a nozzle into a hot vapor stream and vaporized . Solids form as moisture quickly leaves the droplets. A nozzle is usually used to make…[Leia mais]

A backpack—also called knapsack, schoolbag, rucksack, rucksac, pack, sackpack, booksack, bookbag or backsack—is, in its simplest frameless form, a fabric sack carried on one’s back and secured with two straps that go over the shoulders, but it can have an external frame, internal frame, and there are bodypacks. In the era of more and more ind…[Leia mais]

A drinking straw is a utensil that is intended to carry the contents of a beverage to one’s mouth. Straws are commonly made from plastics but environmental concerns and new regulation have led to rise in reusable and biodegradable straws. These straws are often made of silicone, cardboard, or metal. A straw is used by placing one end in one’s…[Leia mais]

In a piston engine, a piston rod joins a piston to the crosshead and thus to the connecting rod that drives the crankshaft or (for steam locomotives) the driving wheels. Internal combustion engines, and in particular all current automobile engines, do not generally have piston rods. Instead they use trunk pistons, where the piston and crosshead…[Leia mais]