Zobrazeno 1 - 9
of 9
pro vyhledávání: '"D. W. Auckland"'
Publikováno v:
Journal of Physics D: Applied Physics. 23:1608-1613
It is shown that the internal strain present in resin insulation by virtue of its manufacture changes under the influence of vibrational electrostatic forces associated with normal operating fields. This is an important observation since the tree-lik
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f7f46cf9a3c4f3ed388f4f1ce3bc137
https://doi.org/10.1088/0022-3727/23/12/018
https://doi.org/10.1088/0022-3727/23/12/018
Autor:
R Shuttleworth, D W Auckland
Publikováno v:
Journal of Physics E: Scientific Instruments. 12:1071-1074
In the technique described a resistance strain gauge bridge is used. The output from the bridge is amplified and used to pulse-width-modulate a 20 kHz square wave. The modulated waveform is extracted from the shaft, using split brass rings and carbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddff148e1bfe6f99d1c61e25763cb7f4
https://doi.org/10.1088/0022-3735/12/11/016
https://doi.org/10.1088/0022-3735/12/11/016
Publikováno v:
Journal of Physics E: Scientific Instruments. 11:341-344
A closed-loop method of stabilising mains-driven, high-voltage AC and DC generators is described. A transistor power amplifier is used as a regulator which allows the generators to be supplied at frequencies other than 50 Hz if desired. The generator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24768329d59498b3f659d8ecee6ba5fe
https://doi.org/10.1088/0022-3735/11/4/018
https://doi.org/10.1088/0022-3735/11/4/018
Publikováno v:
Journal of Physics E: Scientific Instruments. 17:1193-1198
A contactless method of measuring torque in a rotating shaft is described. A high resolution optical encoder is used to sense torsion at a convenient point in the rotating system containing the shaft of interest. The encoder's output is processed dig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d8ee9f7db087501b727882947aefe1f
https://doi.org/10.1088/0022-3735/17/12/025
https://doi.org/10.1088/0022-3735/17/12/025
Autor:
D W Auckland
Publikováno v:
Journal of Physics E: Scientific Instruments. 4:1045-1048
A digital peak voltmeter is described which determines the unknown voltage by comparing it with each of 100 known constant voltages in turn. Each constant voltage exceeds its predecessor by a fixed amount. Despite the large number of reference voltag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd931a713ef1147a9d1885f015be2b38
https://doi.org/10.1088/0022-3735/4/12/027
https://doi.org/10.1088/0022-3735/4/12/027
Autor:
D W Auckland, B R Varlow
Publikováno v:
Journal of Physics E: Scientific Instruments. 10:589-591
Using an integrated circuit multiplier, the authors have developed a wattmeter capable of measuring watts, VA and VAR in the same instrument. Its power factor range and frequency response together with its cheapness have enabled this instrument to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08fa7073fe65094b29d32fe1372c080a
https://doi.org/10.1088/0022-3735/10/6/003
https://doi.org/10.1088/0022-3735/10/6/003
Publikováno v:
Journal of Physics E: Scientific Instruments. 8:847-849
A high speed camera is described which was constructed to take single frame photographs of prebreakdown luminescence. The exposure time is 13 ns and the instant at which shuttering occurs can be varied in increments of 5 ns over a period of 300 ns fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a48accfac9e365a873cf70f3f713780c
https://doi.org/10.1088/0022-3735/8/10/017
https://doi.org/10.1088/0022-3735/8/10/017
Publikováno v:
Digest of Literature on Dielectrics Volume 42 1978.
In the course of this survey we have consulted more than 60 journals, conference and symposium reports originating from 16 countries. The principal sources of information were the Annual Report — Conference on Electrical Insulation and Dielectric P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fff7292b03f97445e04bbd056fbed91b
https://doi.org/10.1109/dld.1978.7739925
https://doi.org/10.1109/dld.1978.7739925
Autor:
R Shuttleworth, D W Auckland
Publikováno v:
Journal of Physics E: Scientific Instruments. 14:151-152
Describes an instrument for accurate measurement of transient changes without the machine having to be synchronised. The instrument has been designed for laboratory use but the principle could be applied to practical machines.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be45de78d405b6a3ade9dc9d572e5632
https://doi.org/10.1088/0022-3735/14/2/004
https://doi.org/10.1088/0022-3735/14/2/004