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Mullard Limited was a British manufacturer of electronic components. The Mullard Radio Valve Co. Ltd. of Southfields, London, was founded in 1920 by Captain Stanley R. Mullard, who had previously designed valves for the Admiralty before becoming managing director of the Z Electric Lamp Co. The company soon moved to Hammersmith, London and then in 1923 to Balham, London. At the same time, in order to meet the technical demands of the newly formed BBC, Mullard formed a partnership with the Dutch manufacturer Philips. The valves (US vacuum tube) produced in this period were named with the prefix PM, for Philips-Mullard, beginning with the PM3 and PM4 in 1926. Mullard finally sold all its shares to Philips in 1927. In 1928 the company introduced the first pentode valve to the British market. Image File history File links Information. ... Electronics is the study of the flow of charge through various materials and devices such as, semiconductors, resistors, inductors, capacitors, nano-structures, and vacuum tubes. ... Southfields is a district in the London Borough of Wandsworth. ... This article is about the capital of England and the United Kingdom. ... 1920 (MCMXX) was a leap year starting on Thursday. ... Stanley Robert Mullard, (November 1, 1883 – September 1, 1979) was an English industrialist who founded the Mullard electronics company. ... Hammersmith is an urban centre in the London Borough of Hammersmith and Fulham in West London, England, approximately 5 miles (8km) west of Charing Cross on the north bank of the River Thames. ... Year 1923 (MCMXXIII) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar. ... Balham is: Balham, a place in the London Borough of Wandsworth in London, England. ... The British Broadcasting Corporation, which is usually known as the BBC, is the largest broadcasting corporation in the world in terms of audience numbers, employing 26,000 staff in the United Kingdom alone and with a budget of more than GB£4 billion. ... Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world, founded and headquartered in the Netherlands. ... Structure of a vacuum tube diode Structure of a vacuum tube triode In electronics, a vacuum tube, electron tube, or (outside North America) thermionic valve or just valve, is a device used to amplify, switch or modify a signal by controlling the movement of electrons in an evacuated space. ... Year 1926 (MCMXXVI) was a common year starting on Friday (link will display the full calendar) of the Gregorian calendar. ... Year 1927 (MCMXXVII) was a common year starting on Saturday (link will display full calendar) of the Gregorian calendar. ... Year 1928 (MCMXXVIII) was a leap year starting on Sunday (link will display full calendar) of the Gregorian calendar. ...

The head office in later years was Mullard House in Torrington Place, Bloomsbury, which is now part of University College London and home to UCL's Department of Electronics & Electrical Engineering, Faculty of Engineering. Bloomsbury may refer to: Bloomsbury, London, an area in the centre of the city the Bloomsbury group, an English literary group active around from around 1905 to the start of World War II. the Bloomsbury Gang, a political grouping centred on the local landowner, John Russell, 4th Duke of Bedford... Affiliations University of London Russell Group LERU EUA ACU Golden Triangle G5 Website http://www. ...

Mullard opened a new manufacturing plant at Mitcham, Surrey in 1929. A second building was added in 1936. Both buildings had a very distinctive flat roof construction and were very similar to those at Philips' headquarters in Eindhoven, Netherlands. Co-sited with the Mullard buildings was the manufacturing complex for Philips Radios. Mitcham was also home to the Mullard Application Laboratory. , Mitcham is a place in the London Borough of Merton, it is a suburb south of Streatham situated 7. ... Country Netherlands Province North Brabant Government  - Mayor Alexander Sakkers (VVD) Area (2006)  - Municipality 88. ...

In the late 1930s Mullard opened a new plant in Blackburn, Lancashire. By 1949 Mullard had produced a number of television sets, such as the MTS-521 and MTS-684. In 1951 Mullard was producing the LSD series of photographic flash tubes. This article is about Blackburn in Lancashire, England. ... 1949 (MCMXLIX) was a common year starting on Saturday (the link is to a full 1949 calendar). ...

Mullard had factories in Southport and Simonstone, Burnley both in Lancashire. The latter was closed in 2004. There was also a sister factory in Durham. Other factories included those at Fleetwood (closed in 1979) and Lytham St. Annes (closed in 1972). A feeder factory at Haydock closed in 1981. For other uses, see Southport (disambiguation). ... The village of Simonstone lies in the south-east corner of the Ribble Valley, a part of North-west England. ... , Burnley is a large market town in the north-east of Lancashire in north-west England with a population of 73,021[1] (2001 census). ... Lancashire is a non-metropolitan county of historic origin in the North West of England, bounded to the west by the Irish Sea. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Durham (IPA: locally, in RP) is a small city and main settlement of the City of Durham district of County Durham in North East England. ... , Fleetwood is a town within the Wyre district of Lancashire, England, lying at the northwest corner of the Fylde. ... Lytham St Annes is a town in the Fylde district of Lancashire, England. ... Haydock is a ward within of the Metropolitan Borough of St Helens, Merseyside, England and is in the historic County of Lancashire. It was one of the United Kingdoms richest areas in coal and coal mining. ...

In the early 1980s, Mullard manufactured some of the earliest teletext decoding modules made in the UK. Year 1980 (MCMLXXX) was a leap year starting on Tuesday (link displays the 1980 Gregorian calendar). ... A BBC Ceefax page from January 9, 2007. ...

Mullard owned semiconductor factories in Southampton and Stockport. Both sites are now owned by NXP Semiconductors (formerly Philips Semiconductors.) The one in Hazel Grove, Stockport specializes in power semiconductor devices. A semiconductor is a fuckin solid whose electrical conductivity is in between that of a metal and that of an insulator, and can be controlled over a wide range, either permanently or dynamically. ... Southampton is the largest city[1] on the south coast of England. ... Stockport is a large town in the north west of England. ... For other uses of NXP, see NXP (disambiguation). ... Company logo Koninklijke Philips Electronics N.V. (Royal Philips Electronics), usually known as Philips, is one of the largest consumer electronics producers in the world. ... Hazel Grove is a village near Stockport in the North West of England. ... Power semiconductor devices are semiconductor devices used as switches or rectifiers in power electronic circuits (switch mode power supplies for example). ...

The first transistors produced by Mullard were the OC50 and OC51 point-contact types, which were not widely used. In 1953 Mullard moved to junction transistors, beginning with the plastic-cased OC10 series. These were followed by the glass-encapsulated OC70 series, which were produced in large numbers and copied by other companies, such as Valvo (another Philips subsidiary), Intermetall and Siemens in Germany, and Amperex in the USA. In 1964 the company produced a prototype electronic desktop calculator as a technology demonstrator for its transistors and cold cathode indicator tubes. For other uses, see Transistor (disambiguation). ... Year 1953 (MCMLIII) was a common year starting on Thursday (link will display full calendar) of the Gregorian calendar. ... Siemens AG (ISIN: DE0007236101, FWB: SIE, NYSE: SI) is one of the worlds largest companies and Europes largest engineering firm. ... 1964 (MCMLXIV) was a leap year starting on Wednesday (the link is to a full 1964 calendar). ... For other uses, see Calculator (disambiguation). ... Note: Principles are mostly the same for cold cathode ion sources as in particle accelerators to create electrons. ...

In 1957 Philips-Mullard helped to set up the Mullard Radio Astronomy Observatory (MRAO) at the University of Cambridge. In 1966 the Mullard Space Science Laboratory (MSSL) was opened near Dorking, Surrey as part of University College London. The Royal Society Mullard Award^[1] for young scientists and engineers was set up in 1967. Year 1957 (MCMLVII) was a common year starting on Tuesday (link displays the 1957 Gregorian calendar). ... Mullard Radio Astronomy Observatory is home to a number of large aperture synthesis radio telescopes, including the One-Mile Telescope, 5km Ryle Telescope, and the Arcminute Microkelvin Imager. ... The University of Cambridge (often Cambridge University), located in Cambridge, England, is the second-oldest university in the English-speaking world and has a reputation as one of the worlds most prestigious universities. ... Year 1966 (MCMLXVI) was a common year starting on Saturday (link will display full calendar) of the 1966 Gregorian calendar. ... The Mullard Space Science Laboratory (MSSL) is the United Kingdoms largest university space research group. ... Dorking is a market town at the foot of the North Downs approximately 25 miles south of London, in Surrey in England. ... Not to be confused with Surry. ... Affiliations University of London Russell Group LERU EUA ACU Golden Triangle G5 Website http://www. ... The premises of The Royal Society in London (first four properties only). ... Year 1967 (MCMLXVII) was a common year starting on Sunday (link will display full calendar) of the 1967 Gregorian calendar. ...

Philips continued to use the brand name "Mullard" in the UK until 1988. Mullard Research Laboratories in Redhill, Surrey then became Philips Research Laboratories. As of 2007, the Mullard brand has been revived by Sovtek, producing a variant of the EL34. Year 1988 (MCMLXXXVIII) was a leap year starting on Friday (link displays 1988 Gregorian calendar). ... Redhill is a town in the borough of Reigate and Banstead, Surrey, England and is part of the London commuter belt. ... Not to be confused with Surry. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... Sovtek are a Russian brand of vacuum tube in current production. ... Matched EL34 Vacuum Tubes by Russian manufacturer, Svetlana The EL34, is a vacuum tube of the pentode type. ...

Z Electric Lamp Co. continued business into the 1970s operating from premises in Thornton Heath near Croydon, Surrey, England manufacturing lamps of specialised design. However, they went out of business due to the recession brought about by the high inflation of the mid 1970s.^{[citations needed]} Thornton Heath is a municipality in the London Borough of Croydon. ... It has been suggested that Central Croydon be merged into this article or section. ...

See also

• British Valve Association

This article does not cite any references or sources. ...

Reference

1. ^ http://www.royalsoc.ac.uk/funding.asp?id=4870

External links

• A History of Mullard Valves 1920-40 by Andy Cowley
• Mullard History at National Valve Museum
• Mullard Seminconductors by Andrew Wylie