| 1. |
The dielectric properties of some homogeneous materials at high electric stress |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 373-377
A.E.W.Austen,
Preview
|
PDF (787KB)
|
|
摘要:
Specimen-electrode systems suitable for measurements at high stress are considered, and the stresses estimated for which they are suitable.Measurements at 50 c/s on mica, polystyrene and phenol formaldehyde up to stresses of the order of 106V/cm, approximately equal to one-fifth of the intrinsic electric strengths, show that the changes of phase angle, if any, do not exceed 0.0005 With phenol formaldehyde an increase of capacitance of 2.5 parts in 1 000 was observed.
DOI:10.1049/ji-1.1945.0097
出版商:IEE
年代:1945
数据来源: IET
|
| 2. |
The seventeen resistances of three resistors |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 378-379
N.W.Lewis,
Preview
|
PDF (205KB)
|
|
摘要:
Three resistors offer 4 series, 4 parallel, and 6 series-parallel combinations, a total of 17 resistances. It is shown that if the values of the resistors are three consecutive terms of a certain geometric series (common ratio approximately 11/6) then the distribution of the 17 values is closely related to another geometric series (common ratio approximately 6/5). The results apply equally to the combinations of three inductors or three capacitors.
DOI:10.1049/ji-1.1945.0098
出版商:IEE
年代:1945
数据来源: IET
|
| 3. |
The calculation of the short-time ratings of bare electrical conductors |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 380-387
L.H.R.Everitt,
Preview
|
PDF (1007KB)
|
|
摘要:
The paper deals with the calculation of short-time ratings, particularly with respect to those specified in B.S. 587—1940, Clause 58. Briefly these are: 5 min “on” in every 15 min, and 2 min “on” in every 15 min. The method is based on the exact laws of heat radiation and convection, and gives results very closely substantiated by test.
DOI:10.1049/ji-1.1945.0099
出版商:IEE
年代:1945
数据来源: IET
|
| 4. |
The development of motor control-gear |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 396-397
D.Rudd,
Preview
|
PDF (289KB)
|
|
DOI:10.1049/ji-1.1945.0104
出版商:IEE
年代:1945
数据来源: IET
|
| 5. |
Aerials for use on aircraft: a comparison between fixed and trailing types on the 900-metre waveband |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 397-398
Charles B.Bovill,
Preview
|
PDF (596KB)
|
|
DOI:10.1049/ji-1.1945.0105
出版商:IEE
年代:1945
数据来源: IET
|
| 6. |
Modern electric lift practice |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 398-399
L.S.Atkinson,
Preview
|
PDF (418KB)
|
|
DOI:10.1049/ji-1.1945.0106
出版商:IEE
年代:1945
数据来源: IET
|
| 7. |
Distribution of tensile load in relation to temperature and sag of steel-cored aluminium conductors |
| |
Journal of the Institution of Electrical Engineers - Part I: General,
Volume 92,
Issue 58,
1945,
Page 399-400
E.W.W.Double,
Preview
|
PDF (342KB)
|
|
DOI:10.1049/ji-1.1945.0107
出版商:IEE
年代:1945
数据来源: IET
|
首页
