Power supply

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OBJECT TYPE
DC
DATE
1967–1990
ARTIFACT NUMBER
2008.1870.001
MANUFACTURER
HEWLETT-PACKARD
MODEL
Unknown
LOCATION
United States of America

More Information


General Information

Serial #
1146A01931
Part Number
1
Total Parts
1
AKA
N/A
Patents
N/A
General Description
An object comprised of metal and synthetic material/Un objet fait avec des éléments en métal et du matériel synthétique.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
34.7 cm
Width
20.2 cm
Height
16.6 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Chemistry
Category
Test-measurement equipment
Sub-Category
N/A

Manufacturer

AKA
HEWLETT PACKARD
Country
United States of America
State/Province
Unknown
City
Unknown

Context

Country
Canada
State/Province
Ontario
Period
1967-1990s
Canada
The vacuum Ebert spectrograph, developed by Donald A. Ramsey at the NRC, was a central instrument in Canada’s contributions to spectroscopy from approximately 1950 to the 1990s. Lead by Nobel Laureate, Gerhard Herzberg, Canada was a leader in this part of physics in the post WWII era. Using this device, D.A. Ramsey and Barry Lutz were able to confirm that the Kuiper bands of Uranus were made of methane. This finding had eluded scientists since the early days of astrophysics. Ramsey, a gifted experimenter, was able to produce this extremely high-resolution spectrograph, in order to determine the origins of the bands in the laboratory. The laboratory findings were compared with Lutz’s observations and measurements of the Uranus bands. The measurements were based on observations taken at the Mount Hamilton Station of the Lick Observatory, California. Le spectrographe Ebert avec une pression à vide était conçu au NRC par Donald A. Ramsey. L'instrument était primordial pour que le Canada puisse contribuer au domaine de spectroscopie pour plus de quarante ans entre 1950 et les années 1990s. La recherche était menée par Gerhard Herzberg qui était un lauréat pour le prix Nobel. Canada est rapidement devenu le meneur dans ce domaine de la physique après la deuxième Guerre Mondial avec Herzberg en charge. M. Ramsey et Barry Lutz ont réussit à confirmer que les bandes Kuipers de l'Uranus sont faits en méthane en utilisant cette machine. La découverte échappait aux scientifiques depuis l'enfance de l'astrophysique. Ramsey était capable de produire ce spectrographe à haute résolution pour déterminer l'origine des bandes au laboratoire. Le scientifique a pu comparer ces résultats avec ceux de Lutz. Les deux séries de mesurément étaient pris à la station de Mont Hamilton a l'observatoire Lick en Californie.
Function
This power supply was used to help the Ebert spectrograph perform its duties by providing a steady supply of power to all of its operating components. Ce bloc d'alimentation était utilisé avec le spectrographe Ebert pour l'appuyer pendant ces tâches tout en apportant une alimentation constante a ces composantes.
Technical
This type of spectrograph dates back to the work of Hermann Ebert in 1889. He developed a spectrometer that consisted of an entrance slit, a single concave spherical mirror, a diffraction grating, and a small photographic plate in the plane of the entrance slit. This artifact is a Ramsey spectrograph, a 33-meter multiple-path cell, that produced spectra of the highest resolution at the time. The main body of this spectrograph was made by Fleck Industries before being installed at the NRC. Despite difficult struggles with leaks in the early construction phase of the optical components, large leak detectors (as big as fridges at the time) were installed and used to locate and fix the leaks. The resultant vacuum conditions allowed for much longer exposures and more precise images. This instrument was also a success due to its optics. The initial resolution of the instrument was not as good as expected, and a new mirror had to be ground and installed. The resolution improved significantly. There were also two gratings in this model, one high and the other low resolution. Ce genre de spectrographe est inspiré par le travail de Hermann Ebert en 1889. Il a développé un spectromètre qui possédait une fente d'entrée, un miroir concave et sphérique, un réseau de diffraction et une plaque photographique située sur le plan de la fente d'entrée. Cet artefact est un spectrographe Ramsey qui possède un trajet-multiple de plus de trente-trois mètres qui produisaient une résolution de la plus haute qualité de sa génération. Le corps du spectrographe était fabriqué par Fleck Industries. Malgré les fuites au début de la phase de construction des composantes optiques, l'installation des détecteurs de fuites installer par la suite ont réussi à trouver et arrêter le déluge. Les conditions après l'installation a construit des conditions de pression à vide qui permettait à la machine de développer des images plus précises avec une exposition prolongée. L'instrument était aussi favori grâce à ces composantes optiques. La résolution initiale n'était pas une haute gamme et donc un nouveau miroir a dû être dépoli et installer. Ceci a augmenté la résolution a un niveau requis. Il y avait aussi deux genres de réseau qui accompagnaient ce modèle qui permettait à une résolution base ou celui qui apportait une résolution plus augmentée.
Area Notes
Unknown

Details

Markings
On the sticker on the top of the object/Sur l’étiqutte sur le dessus de l’artefact: “HIA/ELECTRONICS/NR”, On the front of the object/Sur le devant de l’artefac:“VOLTS [0-30]/[0-2.4]AMPERES/hp,6227B DUAL DC POWER SUPPLY/HEWLETT PACKARD/VOLTS, INDEPENDENT,VOLTS/AMPS,TRACKING,AMPS/VOLTAGE,CURRENT,VOLTAGE,CURRENT/CROWBAR,LINE,CROWBAR/ADJUST,ON,ADJUST/CONNECT TRACKING/+,-,GND,+,-,GND”,On the back of the artifact/Sur le dos de l’artefact:“SELECTOR,GND-LINE/115,115/230V,FUSE/[+/-]10%,115-4A/48-66/230V-2A/350VAMAX”,On the manufacturing plate/Sur la plaque du fabricateur:“HEWLETT PACKARD/SER.1146A01931/MADE IN U.S.A.”,On the knob/Sur le bouton: “FUSE,[ARROW SYMBOL],”,On the head of the plug/ Sur la tête de la prise murale: “CONNECT/TO GROUNDED/OUTLET”.
Missing
Appears complete/L'objet a toutes les pièces
Finish
An artifact that is rectangular in shape and made of a silver and brown coloured metal it has two glass screens on its front that each have a red metal arrow and a scale that is made up of black lettering on a white background. Black synthetic knobs and levers are also visible on its front. One silver metal switch also sits in the middle of the front of the artifact. Black lettering is visible alongside black and red synthetic covered adapter ports. All six of these adapter ports sit along the base of the front of the object. The back of the artifact has a black synthetic cable that extends from it along with three brass coloured metal prongs on its end. A black synthetic knob is also visible with white lettering on its back along with a manufacturing plate. Un artefact qui est fait en forme rectangulaire. Le corps de l'objet est fait en métal de couleur argent et brun. Le devant de l'objet a deux écrans faits en vitre. Dans l'arrière-plan des écrans il y a une échelle fait avec du lettrage noir ainsi que deux flèches en métal de couleur rouge. Un interrupteur en métal de couleur argent est aussi visible. Il est situé au milieu de la face de l'objet. Les autres composantes sur le devant de l'objet incluent des leviers et des boutons synthétiques de couleur noire. Un lettrage noir ainsi que des adaptatrices rouges et noirs sont aperçus sur le fond de la face de l'objet. Le dos de l'artefact a un câble synthétique de couleur noire qui ressort. Le câble a trois fourches en métal de couleur laiton. Le dos a aussi un bouton synthétique avec du lettrage blanc dessus et une plaque du fabricateur.
Decoration
N/A

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If you choose to share our information about this collection object, please cite:

HEWLETT-PACKARD, Power supply, circa 1967–1990, Artifact no. 2008.1870, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2008.1870.001/

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