Comparative Tests of Carbon, Metallized Carbon and Tantalum Filament Lamps (Classic Reprint)

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• T. H. Amrine

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Excerpt from Comparative Tests of Carbon, Metallized Carbon and Tantalum Filament Lamps

Life tests were made of the three kinds of lamps under two different conditions. Ten lamps of each kind were put through the life and efiiciency test upon a steady, well-regulated voltage supplied by a storage battery. The battery was kept ¿oating across nearly constant voltage mains and a large rheostat was put in series with the lamps with which to make the finer adjust ments by hand. The maximum variation was probably not more than one volt and the greater portion of the time the voltage was as nearly correct as the portable voltmeter used would indicate. This was designated Condition A and represents the best con ditions under which the lamps would ever be operated in practice. The same number of lamps were operated under adverse condi tions. A badly ¿uctuating alternating current was supplied to the lamps and there was considerable vibration. This condition, designated Condition B, is representative of very bad operating conditions. Fig. 15 to 20 Show the candle power performance of each lamp in the test. The uniformity of the lamps under con d-ition A is noticeable, none of the curves varying greatly from the mean.

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Udgivelsesdato:

01-11-2016

Sprog:

Engelsk

ISBN13:

9781334346743

Sidetal:

54

Vægt:

86 g

Højde:

3 mm

Bredde:

152 mm

Længde:

229 mm

Forlag:

Forgotten Books

Mærkat:

Bog, hæftet

Format:

Hæftet

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Comparative Tests of Carbon, Metallized Carbon and Tantalum Filament Lamps (Classic Reprint)

af

• T. H. Amrine

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1. Beskrivelse

   Excerpt from Comparative Tests of Carbon, Metallized Carbon and Tantalum Filament Lamps
   
   Life tests were made of the three kinds of lamps under two different conditions. Ten lamps of each kind were put through the life and efiiciency test upon a steady, well-regulated voltage ... Læs meresupplied by a storage battery. The battery was kept ¿oating across nearly constant voltage mains and a large rheostat was put in series with the lamps with which to make the finer adjust ments by hand. The maximum variation was probably not more than one volt and the greater portion of the time the voltage was as nearly correct as the portable voltmeter used would indicate. This was designated Condition A and represents the best con ditions under which the lamps would ever be operated in practice. The same number of lamps were operated under adverse condi tions. A badly ¿uctuating alternating current was supplied to the lamps and there was considerable vibration. This condition, designated Condition B, is representative of very bad operating conditions. Fig. 15 to 20 Show the candle power performance of each lamp in the test. The uniformity of the lamps under con d-ition A is noticeable, none of the curves varying greatly from the mean.
   
   About the Publisher
   
   Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
   
   This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Læs mindre

   Udgivelsesdato:

   01-11-2016

   Leveringstid:

   5-8 hverdage

   Rating:

   (0)

2. Yderligere info

   Udgivelsesdato:

   01-11-2016

   Sprog:

   Engelsk

   ISBN13:

   9781334346743

   Sidetal:

   54

   Vægt:

   86

   Højde:

   3

   Bredde:

   152

   Længde:

   229

   Forlag:

   Forgotten Books

   Mærkat:

   Bog, hæftet

   Format:

   Hæftet
3. Anmeldelser

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