File:Oscillograph Duddell Moving Coil.png
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Summary
[edit]Illustration Description
[edit]Figure 2607 -- Duddell Moving Coil Oscilliograph
General view of electromagnet form of Duddell moving-coil oscillograph, showing the oil bath, and electromagnet.
This instrument is specially designed to have a very high natural period of vibration (about 1 / 10,000 of a second) so as to be suitable for accurate research work. It is quite accurate for frequencies up to 300 Hz.
In the figure:
- A is the brass oil bath in which two vibrators are fixed
- B, core of electromagnet which is excited by two coils
- C, one of the two coils
- D, two pairs of terminals for connecting the two coils
- E, bolts that hold the oil bath in position between the poles of the magnet
- F, two of three leveling screens (one is hidden behind the oil bath)
- G, terminals of one vibrator
- H, fuse
- K, thermometer with bulb in center of oil bath
Public Domain Source
[edit]- Hawkins Electrical Guide, Volume 6
- Chapter 63: Wave Form Measurement
- Page 1858, Figure 2607
- Copyright 1917 by Theo. Audel & Co.
- Printed in the United States
Upload Notes
[edit]- Scanned by User:DMahalko, Dale Mahalko, Gilman, WI, USA -- Email: dmahalko@gmail.com
- Scanned at 600dpi, 8-bit grayscale
- Level-adjusted and cleaned up
See Also
[edit]For a list of all these illustrations used in Wikipedia please see the article Hawkins Electric Guide on the English Wikipedia.
Licensing
[edit]Public domainPublic domainfalsefalse |
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:55, 5 July 2008 | 2,361 × 2,220 (681 KB) | DMahalko (talk | contribs) | === Illustration Description === Figure 2607 -- Duddell Moving Coil Oscilliograph General view of electromagnet form of Duddell moving-coil oscillograph, showing the oil bath, and electromagnet. This instrument is specially designed to have a very high |
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