Топ-100

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Gummel–Poon model

The Gummel–Poon model is a model of the bipolar junction transistor. It was first described in an article published by Hermann Gummel and H. C. Poon at Bell Labs in 1970. The Gummel–Poon model and modern variants of it are widely used in the popu ...

                                               

Hybrid-pi model

The hybrid-pi model is a popular circuit model used for analyzing the small signal behavior of bipolar junction and field effect transistors. Sometimes it is also called Giacoletto model because it was introduced by L.J. Giacoletto in 1969. The m ...

                                               

Subthreshold slope

The subthreshold slope is a feature of a MOSFETs current–voltage characteristic. In the subthreshold region, the drain current behaviour – though being controlled by the gate terminal – is similar to the exponentially decreasing current of a forw ...

                                               

Transistor diode model

In a diode model two diodes are back-to-back connected to make a PNP or NPN bipolar junction transistor equivalent. This model is theoretical and qualitative.

                                               

Darlington transistor

In electronics, a multi-transistor configuration called the Darlington configuration is a compound structure of a particular design made by two bipolar transistors connected in such a way that the current amplified by the first transistor is ampl ...

                                               

Diffused junction transistor

A diffused junction transistor is a transistor formed by diffusing dopants into a semiconductor substrate. The diffusion process was developed later than the alloy junction and grown junction processes for making BJTs. Bell Labs developed the fir ...

                                               

Diode-connected transistor

A diode-connected transistor is a method of creating a two-terminal rectifying device out of a three-terminal transistor. A characteristic of diode-connected transistors is that they are always in the saturation region for metal-oxide-semiconduct ...

                                               

Grown-junction transistor

The grown-junction transistor was the first type of bipolar junction transistor made. It was invented by William Shockley at Bell Labs on June 23, 1948, six months after the first bipolar point-contact transistor. The first germanium prototypes w ...

                                               

Heterojunction bipolar transistor

The heterojunction bipolar transistor is a type of bipolar junction transistor which uses differing semiconductor materials for the emitter and base regions, creating a heterojunction. The HBT improves on the BJT in that it can handle signals of ...

                                               

Heterostructure-emitter bipolar transistor

The Heterojunction-emitter bipolar transistor, is a somewhat unusual arrangement with respect to emitter blocking of minority carriers. This is accomplished by using heterostructure confinement in the emitter, introducing an energy barrier to min ...

                                               

Native transistor

In electronics, a native transistor is a variety of the MOS field-effect transistor that is intermediate between enhancement and depletion modes. Most common is the n-channel native transistor. Historically, native transistors were referred to as ...

                                               

Optical transistor

An optical transistor, also known as an optical switch or a light valve, is a device that switches or amplifies optical signals. Light occurring on an optical transistor’s input changes the intensity of light emitted from the transistor’s output ...

                                               

Organic electrochemical transistor

The organic electrochemical transistor is a transistor in which the drain current is controlled by the injection of ions from an electrolyte into a semiconductor channel. The injection of ions in the channel is controlled through the application ...

                                               

Pentode transistor

One early pentode transistor was developed in the early 1950s as an improvement over the point-contact transistor. A point-contact transistor having three emitters. It became obsolete in the middle 1950s. Pentode field-effect transistors having 3 ...

                                               

Programmable unijunction transistor

Programmable unijunction transistor is a three-lead electronic semiconductor device with which is similar in characteristic to unijunction transistor except that it is programmable.

                                               

Schottky transistor

A Schottky transistor is a combination of a transistor and a Schottky diode that prevents the transistor from saturating by diverting the excessive input current. It is also called a Schottky-clamped transistor.

                                               

Spacistor

The spacistor was a type of transistor developed in the 1950s as an improvement over the point-contact transistor and the later alloy junction transistor. It offered much higher speed than earlier transistors. It became obsolete in the early 1960 ...

                                               

Tetrode transistor

There were two types of tetrode transistor developed in the early 1950s as an improvement over the point-contact transistor and the later grown junction transistor and alloy junction transistor. Both offered much higher speed than earlier transis ...

                                               

Transistor laser

Transistor laser is a semiconductor device that functions as a transistor with an electrical output and an optical output as opposed to the typical two electrical outputs. This optical output separates it from typical transistors and, because opt ...

                                               

Shree Ganesh Jewellery House

Shree Ganesh Jewellery House Ltd. is a Kolkata-based jewellery company founded in 2002. The company is one of the largest manufacturers and exporters of handcrafted gold jewellery in India.

                                               

Gitanjali Group

Gitanjali Group was one of the largest branded jewellery retailers in the world. It was headquartered in Mumbai, India. Gitanjali sells its jewellery through over 4.000 Points of Sale and enjoys a market share of over 50 per cent of the overall o ...

                                               

Gold business in Thrissur

The Gold business in Thrissur is a major revenue earner for the economy of Kerala, India. About 500 kg of gold jewellery is manufactured every year in state, the majority of which is done in Thrissur, making the city a hub of gold business and go ...

                                               

Pure Gold Jewellers

Pure Gold Jewellers is a jewellery retailer with 120 stores across the Middle East, in the UAE, Oman, Kuwait, Qatar, Jordan, KSA, Bahrain, Sri Lanka and 200 stores in India. The companys stores sell a variety of jewellery in diamonds, gold, plati ...

                                               

Shirpur Gold Refinery

Shirpur Gold Refinery is Indias first and Asias largest gold refinery headquartered in Mumbai. It is a green field precious metal refinery with installed capacity to refine 217 MT p.a. of gold and silver respectively in Shirpur, Dhule and Maharas ...

                                               

Sunar

Sunar is a Hindu caste in India referring to the community of people who work as goldsmiths. The community is primarily Hindu, and found usually in Northern India.

                                               

Candere

Candere was founded in 2012 by Ashish Bajaj and Rupesh Jain as an Indian online portal for Gold, Diamond, Gemstone, Platinum jewellery and gold coins. Candere is a Latin word which means to glow or shine.

                                               

CaratLane

CaratLane is the largest online jewellery company in India, and it recently opened its 92nd store in the country. It was founded by Mithun Sacheti and Srinivasa Gopalan in 2008. CaratLanes inventory includes diamond jewellery and gold coins.

                                               

Whitenife

Whitenife is an India-based luxury company, that manufactures products using only animal-friendly materials such as sculptural jewellery, couture apparels and art decor.

                                               

Chudamani

A Chudamani is a lotus-shaped, Indian headdress, usually studded with jewels. It is worn in the center of a knot of hair. The headdress derives its name from chuda meaning bundle of hair, and mani meaning jewel. Chudamani may also refer to ivory ...

                                               

Kolhapuri saaj

Traditionally the necklace is made of 21 leaves or pendants but contemporary wearers prefer 10 to 12. Customarily the necklace is handmade, taking a person a week to make, however challenges such as shortage of skilled manpower and its high cost ...

                                               

Patwa

The Patwa are a mainly Hindu community native to Hindi Belt. Traditionally, they were weavers and engaged in jewellery-making business and worked with silver and golden threads.

                                               

Fattorini and Sons

Fattorini & Sons was a jewellery business established by a family of Italian immigrants who arrived in the British city of Leeds, in Yorkshire, England in the early 19th century. Antonio Fattorini opened a shop in Harrogate to take advantage of s ...

                                               

Hersey & Son

’Hersey & Son’’ is a company founded in Clerkenwell, England. The company is a noted firm of Silversmiths with a history dating back to 1955 when Michael Hersey started his apprenticeship and to 1971 when he and David Mills founded the firm.

                                               

Rundell and Bridge

When Edmond Walter Rundell, nephew of Philip Rundell, was admitted as a partner in 1804, the firms name changed to Rundell, Bridge & Rundell. That same year John Gawler Bridge, nephew of John Bridge also joined the firm. Following John Bridges de ...

                                               

Smith and Pepper

Smith and Pepper was a jewellery manufacturing firm in Birmingham, England, which traded between 1899 and 1981. The factory is now the Museum of the Jewellery Quarter.

                                               

Astley Clarke

Astley Clarke is a British jewellery brand that was founded in London in 2006 by Bec Astley Clarke. Astley Clarke started as an online retailer, selling international jewellery designers such as Carolina Bucci, Pippa Small, Shaun Leane, Katie Hil ...

                                               

Daisy London

Daisy London is a British jewellery brand founded in 2009. It has an e-commerce platform and stockists in the UK and internationally. It is known for collaborations with celebrities Cara Delevingne and Laura Whitmore.

                                               

Dower & Hall

Dower & Hall is a British Jewellery brand that was established in 1990 by husband and wife team Dan Dower & Diane Hall. The brand has a store in Glasgow and is also stocked by independents and department stores, such as John Lewis and Fenwick, ar ...

                                               

Monica Vinader

Monica Vinader Ltd. is a British jewellery brand selling necklaces, pendants, earrings, rings and friendship bracelets. In 2002 Monica Vinader, the brands creative director, began creating her jewellery collection whilst working in South America ...

                                               

Tom Binns Design

Tom Binns Design is a jewellery design company founded in 2004 by jeweller Tom Binns and CEO Cristina Viera Newton. Binns has been designing, manufacturing and distributing jewellery for almost thirty years, starting with his Punkature collaborat ...

                                               

Howell James & Co.

Howell James & Company was a firm of jewellers and silversmiths based in Regent Street in London which operated between 1819 and 1911. In 1876 they added galleries showing professional art pottery and the fashionable amateur china painting, and i ...

                                               

Links of London

Links of London is a British brand owned by Greek jewellery company Folli Follie, with headquarters in London, England. It was founded in 1990 by John Ayton and Annoushka Ducas. It sells through outlets in Europe, the US, Asia and online.

                                               

Kramer of New York

Kramer of New York was a jewellery company formerly located 393 5th Avenue in Manhattan, New York City, New York. Jeweller Louis Kramer founded the company in 1943. Although the company ceased operations in 1980, Kramer of New York is still a wel ...

                                               

Napier Company (jewellery)

The Napier Company is an American jewelry manufacturing company, and was one of the first modern corporations in the United States. The company is also known historically as a cutting-edge silver object manufacturer.

                                               

Thomas Mann (artist)

Thomas Robert Mann is an American jewelry artist known primarily for his metalsmithing and assemblage techniques. Combining industrial-style metals with found trinkets and baubles, Mann has dubbed his style "Techno-Romantic" and runs Studio I/O i ...

                                               

Alex and Ani

The firm was founded in 2004 by Carolyn Rafaelian. The name comes from a combination of the first names of Rafaelians two daughters. The company originally stated that they wanted to produce "bangle bracelets, necklaces, earrings and rings that a ...

                                               

Cadoro

Cadoro, or Cadoro Jewels Corporation, was a Manhattan-based jewelry company founded in 1954 by Steven Brody and Daniel Stoenescu, specialising in fashionable costume jewelry sold via department stores such as Neiman Marcus and Saks Fifth Avenue. ...

                                               

Corocraft

The Coro costume jewelry company started doing business in 1901, producing jewelry under several brand names, including Corocraft. Some of their more notable products include the Coro Duettes, Coro Tremblers, Coro Door Knockers and Coro Crown Pin ...

                                               

Holly Yashi

Hosterman and Paul Lubitz founded Holly Yashi in their garage after graduating from Humboldt State University in 1981. Holly Yashi produces handmade jewelry designed by Holly Hosterman, who has been recognized for her distinctive use of the preci ...

                                               

James Avery Artisan Jewelry

James Avery Artisan Jewelry is a private company that designs, manufactures, and sells jewelry, primarily Christian themed. The founder, James Avery, started the business in 1954 in Kerrville, Texas out of his mother-in-laws two-car garage with a ...