H1 lamp

The H1 is a halogen lamp designed for use in automotive headlamps and fog and driving lamps. It has also been widely applied in emergency vehicle lights.

H1 Lamp
H1 lamp
General Information
CategoryAutomotive
TypeHalogen
Filament orientationAxial
Filament countOne

Origin

The H1 was the first halogen lamp approved for automotive use. It was introduced in 1962 by a group of European bulb and headlamp manufacturers. The bulb was not approved for use in the US until 1997.

Specifications

Base

The H1 lamp uses a P14.5s base in accord with IEC 60061.[1] This is a round metal prefocus base 14.5 mm in diameter with a flat and two dimples so the H1 can be installed in a lamp only in the one correct orientation. There is one 6.35 mm male spade terminal in the center of the base, through which power is supplied. The H1 grounds through the metal base itself.

Power and output

Under ECE Regulation 37, which governs automotive filament lamps in most of the world, the H1 lamp's nominal rating is 55 W at 12 V, and its test rating is 68 W (maximum) and 1550 ± 15% lumens at 13.2 V. R37 also contains provisions for 6 V, 55 W and 24 V, 70 W H1 lamps.[1] The United States government does not recognise ECE regulations, but rather applies its own regulations. Under these, the H1 is rated 65 W (maximum) and 1410 lumens ± 15% at 12.8 V.[2] Despite the two different sets of specified voltages and test protocols, the lamps themselves are the same; with few exceptions, 12 V H1 lamps are generally manufactured and tested to comply with both regulations.

Colour of light

Under ECE regulations, H1 lamps are required to emit white or selective yellow light.[1] U.S. regulations require H1 lamps to emit white light.[2] Under both ECE and U.S. specifications, the allowable range of white light is quite large; some H1 lamps have a slight blue or yellow tint to the glass yet still produce light legally acceptable under the requirement for white light.

Variants

Compliant

Because the light output is specified as a nominal value with a 30 % tolerance (± 15%), H1 lamps may be optimised for longer life (with lower flux and luminance), or for higher flux and luminance (with shorter life). A long-life filament is wound on a larger mandrel with a wider pitch — the separation distance between adjacent filament coils. This tends to reduce the filament's luminance and the focus of the beam from the headlamp, Opposite alterations are made to create higher-performance lamps; the filament is wound on a smaller mandrel with a tighter pitch. This increases flux and luminance and creates a better-focused beam from the headlamp, but lifespan is reduced. These same changes can be made with different parameters to give output identical to a standard bulb, but with lower power consumption.

Noncompliant

Lamps are available that conform to the physical specifications for H1, but not to the regulated specifications for power consumption, light output, and/or light colour. These include high-wattage lamps, and those that emit light of a colour outside the white or selective yellow specification ranges. Such lamps are illegal throughout the industrialised world for use in regulated automotive lighting devices, and so vehicle wiring, switches, and lighting components are generally not designed or built to withstand the higher heat and power consumption from off-spec lamps. Lamps with higher-than-specified output can also create unsafe levels of glare.[3] There is considerable variability by jurisdiction in the regulation of off-road applications of lamp types used in on-road vehicles.

See also

References

  1. ^ a b c "ECE R37, "Filament lamps of power-driven vehicles and their trailers" Revision 5" (PDF). (1.79 MB)
  2. ^ a b "U.S. headlamp replaceable light source specifications" (PDF).
  3. ^ "Overwattage bulbs explained" (PDF). Archived from the original (PDF) on 2009-04-24. Retrieved 2009-06-03.

Read other articles:

Aristide Briand

Aristide BriandNama dalam bahasa asli(fr) Aristide Briand BiografiKelahiran(fr) Aristide Pierre Henri Briand 28 Maret 1862 Nantes Kematian7 Maret 1932 (69 tahun)Paris Tempat pemakamanCimetière de Cocherel (en)   President of the Council (en) 29 Juli 1929 – 2 November 1929 ← Raymond Nicholas Landry Poincare – André Tardieu (en) →   President of the Council (en) 28 November 1925 – 17 Juli 1926 ← Paul Prudent Painle...

 

Standar praktik akuntansi

AkuntansiKonsep dasarAkuntan · Pembukuan · Neraca percobaan · Buku besar · Debit dan kredit · Harga pokok · Pembukuan berpasangan · Standar praktik · Basis kas dan akrual · PABU / IFRSBidang akuntansiBiaya · Dana · Forensik · Keuangan · Manajemen · PajakLaporan keuanganNeraca · Laba rugi · Perubahan ekuitas · ...

 

كأس رابطة المحترفين الإماراتية 2008–09

يفتقر محتوى هذه المقالة إلى الاستشهاد بمصادر. فضلاً، ساهم في تطوير هذه المقالة من خلال إضافة مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (مارس 2016) كأس رابطة المحترفين الإماراتية 2008–09معلومات عامةالرياضة كرة القدم الاتحاد اتحاد الإمارات العربية المتحدة...

Disappearance of Ron Arad

Israeli Air Force officer missing in action since 1986 This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.Find sources: Disappearance of Ron Arad – news · newspapers · books · scholar · JSTOR (March 2016) (Learn...

 

History of Chinese archaeology

A cylindrical bronze wine container made during the late Shang dynasty (c. 1600 – c. 1050 BCE); such items were excavated by gentry scholars of the Song dynasty (960–1279).[1] Part of a series on theHistory of China Timeline Dynasties Historiography Prehistoric Paleolithic Neolithic (c. 8500 – c. 2000 BCE) Yellow, Yangtze, and Liao civilization Ancient Xia (c. 2070 – c. 1600 BCE) Shang (c. 1600 – c. 1046 BC...

 

Foxtel Now

Foxtel NowType of businessSubsidiaryType of siteOver-the-top media serviceAvailable inEnglishHeadquartersSydney, New South Wales, AustraliaArea servedAustraliaOwnerFoxtelProducts Streaming media Video on demand Services Film distribution Television distribution URLfoxtel.com.au/nowRegistrationRequiredUsers 177,000 (as of 30 June 2023)[1]Launched11 August 2013; 10 years ago (11 August 2013)Current statusActive Foxtel Now (formerly Foxtel Play) is an Austral...

Simon Munnery

British comedian Simon MunneryMunnery performing at The Stand, Edinburgh, in 2022Born1967 (age 56–57)Middlesex, EnglandMediumStand up, television, radioNationalityEnglishGenresAlternative comedy, satire, surreal comedySubject(s)Politics Simon Munnery is an English comedian. Early life Born in Middlesex, Munnery grew up in Bedmond[1] and was educated at Watford Grammar School for Boys, where he earned four A Levels.[2] He read natural sciences at Trinity College, Cam...

 

Stazione di Chieti

Questa voce o sezione sull'argomento stazioni d'Italia non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Chietistazione ferroviaria LocalizzazioneStato Italia LocalitàChieti Coordinate42°21′25″N 14°08′18″E / 42.356944°N 14.138333°E42.356944; 14.138333Coordinate: 42°21′25...

 

コルク

この記事は検証可能な参考文献や出典が全く示されていないか、不十分です。出典を追加して記事の信頼性向上にご協力ください。（このテンプレートの使い方）出典検索?: コルク – ニュース · 書籍 · スカラー · CiNii · J-STAGE · NDL · dlib.jp · ジャパンサーチ · TWL（2017年4月） コルクを打ち抜いて作った瓶の栓 コルク（木栓、�...

Wyoming Legislature

Legislative branch of the state government of Wyoming This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: Wyoming Legislature – news · newspapers · books · scholar · JSTOR (March 2021) Wyoming State LegislatureTypeTypeBicameral HousesSenateHouse of RepresentativesLeadershipPresident of the SenateOgden ...

 

محمد عبد الحليم أبو غزالة

المشير عبد الحليم أبو غزالة القائد العام للقوات المسلحة وزير الدفاع والإنتاج الحربي نائب رئيس مجلس الوزراء في المنصب1981 – 1989 الرئيس محمد حسني مبارك أحمد بدوي يوسف صبري أبو طالب رئيس أركان حرب القوات المسلحة في المنصب1980 – 1981 أحمد بدوي عبد رب النبي حافظ مدير إدارة المخابرات...

 

BosWash

This article is about the word coined in the 1960s. For the Boston to Washington, D.C. combined urbanized region, see Northeast megalopolis. This article is missing information about to what degree these predictions did or did not come true. Please expand the article to include this information. Further details may exist on the talk page. (December 2023) Herman Kahn, co-author of The Year 2000: A Framework for Speculation on the Next Thirty-Three Years, in which the term BosWash first appeare...

Welsh National Opera

Theatre company based in Cardiff, Wales Logo of Welsh National Opera Welsh National Opera (WNO) (Welsh: Opera Cenedlaethol Cymru) is an opera company based in Cardiff, Wales; it gave its first performances in 1946. It began as a mainly amateur body and transformed into an all-professional ensemble by 1973. In its early days the company gave a single week's annual season in Cardiff, gradually extending its schedule to become an all-year-round operation, with its own salaried chorus and orchest...

 

Giovanni de La Lande

Questa voce sull'argomento santi francesi è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. San Giovanni de La LandeSantino celebrativo per la canonizzazione dei martiri nordamericani Gesuita e martire  NascitaDieppe, 1615 MorteOssenon, 19 ottobre 1646 Venerato daChiesa cattolica Beatificazione21 giugno 1925 Canonizzazione29 giugno 1930 Ricorrenza19 ottobre Attributipalma Manuale Giovanni La Lande (Dieppe, 1615 – Ossenon, 19 ottobre 1646) è...

 

كولن باول

كولن باول (بالإنجليزية: Colin Powell)‏  مناصب مستشار الأمن القومي الأمريكي   في المنصب23 نوفمبر 1987  – 20 يناير 1989  فرانك كارلوتشي  برنت سكوكروفت  رئيس هيئة الأركان المشتركة الأمريكية   في المنصب1 أكتوبر 1989  – 30 سبتمبر 1993  ويليام جاي كرو  ديفيد إي. جيريمياه...

Garden city movement

This article is about a method of urban planning. For the band, see Garden City Movement (band). Garden town and Garden Cities redirect here. For other uses, see Garden town (disambiguation) and Garden City (disambiguation). For a list of garden cities, see List of garden cities. Urban planning movement Ebenezer Howard's three magnets diagram, which addressed the question, Where will the people go?, with three choices being: Town, Country, or Town-Country. Ebenezer Howard's Diagram illustrati...

 

Arqueología

Arqueología La arqueología es la ciencia que estudia lo que se refiere a las artes, a los monumentos y a los objetos de la antigüedad, especialmente a través de los restos encontrados. (DRAE, 23.ª edición, 2014) Portal:Antropología Ramas principales -Arqueología subacuática -Arqueometría -Egiptología -Etnoarqueología Teorías, corrientes, escuelas arqueológicas Arqueología postprocesual Arqueología procesual Determinismo medioambiental Difusionismo Evolución cultural Funciona...

 

1908 Bournemouth Tramway accident

1908 Bournemouth Tramway accidentAvenue Road next to Bournemouth Gardens, the scene of the crash pictured in 2010.DetailsDate1 May 1908 (1908-05-01)LocationBournemouth, EnglandCoordinates50°43′17″N 1°52′59″W / 50.721266°N 1.883169°W / 50.721266; -1.883169CountryEnglandOperatorBournemouth Corporation TramwaysCauseBrake failureStatisticsTrains1Deaths7Injured26The 1908 Bournemouth Tramway accident was a fatal tram accident which occurred on 1 M...

General Electric T700

General Electric T700 dan CT7 adalah keluarga turboshaft dan turboprop mesin di kelas 1,500-3,000 shp (1,100-2,200 kW). Pada tahun 1967, General Electric mulai bekerja pada mesin turboshaft demonstran baru ditunjuk GE12 dalam menanggapi kepentingan Angkatan Darat AS di helikopter utilitas-generasi berikutnya. Pada tahun 1970, untuk pengembangan Sikorsky S-70 Black Hawk, didukung oleh turboshaft kembar GE T700, keturunan produksi GE12 tersebut. T700 ini awalnya diuji pada tahun 1973, lulus ku...

 

Flight into Egypt

Biblical story about the flight of Joseph, Mary and the infant Jesus For other uses, see Flight into Egypt (disambiguation). The Flight into Egypt by Giotto di Bondone (1304–1306, Scrovegni Chapel, Padua) Events in theLife of Jesusaccording to the canonical gospels Early life Annunciation Visitation Joseph's dreams Nativity Virgin birth Annunciation to the Shepherds Adoration of the Shepherds Circumcision Adoration of the Magi Flight into Egypt Massacre of the Innocents Presentation Return ...