Zobrazeno 1 - 10
of 14
pro vyhledávání: '"J. T. Boys"'
Publikováno v:
Bioelectromagnetics. 19:162-171
New technology involving the use of high-frequency inductive power distribution (HID) has recently been developed for use in materials handling and personnel transfer. Sinusoidal magnetic fields at a frequency of 10 kHz with field intensities of appr
Publikováno v:
Bioelectromagnetics. 17:111-122
A high-frequency inductive power distribution (HID) technology has been developed that generates sinusoidal magnetic fields at a frequency of 10 kHz. In typical industrial applications, field intensities in the order of 0.2 mT can be expected between
Publikováno v:
Bioelectromagnetics. 19(3)
New technology involving the use of high-frequency inductive power distribution (HID) has recently been developed for use in materials handling and personnel transfer. Sinusoidal magnetic fields at a frequency of 10 kHz with field intensities of appr
Publikováno v:
Bioelectromagnetics. 17(2)
A high-frequency inductive power distribution (HID) technology has been developed that generates sinusoidal magnetic fields at a frequency of 10 kHz. In typical industrial applications, field intensities in the order of 0.2 mT can be expected between
Autor:
J. T. Boys, E. R. Strelow
Publikováno v:
Journal of Visual Impairment & Blindness. 73:179-184
A binaural sensory aid for research with blind children is described along with the rationale for its design features. The basic operation of this form of aid is described in detail with particular reference to those features that control the sensing
Autor:
R. M. Green, J. T. Boys
Publikováno v:
IEEE Transactions on Industry Applications. :146-151
A variety of means have been used in the past for assessing the quality of pulsewidth modulated (PWM) inverter output voltages. A further analysis is given of the performance of such voltage sequences. The analysis is primarily computer-based, but ex
Autor:
P. W. Wallace, J. T. Boys
Publikováno v:
Proceedings of the Institution of Mechanical Engineers. 191:371-380
Methods of controlling the tightness of bolted assemblies by presetting the torque or bolt rotation are reviewed. It is shown that these produce either inaccurate clamp loads or excessive elongation of the fastener. As a result the tightening operati
Autor:
R. M. Green, J. T. Boys
Publikováno v:
IEEE Transactions on Industry Applications. :138-145
A description is given of a number of new circuit techniques, useful primarily in the control hardware of inverter drives using ``sub-harmonic''- or ``triangulation''-based pulsewidth modulation algorithms. Most aspects of such a system are covered.
Autor:
R. M. Green, J. T. Boys
Publikováno v:
IEEE Transactions on Industry Applications. :152-162
When a "modified" McMurray inverter is used to drive 400-V cage induction machines from a nominal 560-V dc supply using pulsewidth modulation techniques, the voltage stresses which the thyristor elements must withstand become severe. With a view to p
Autor:
J. T. Boys
Publikováno v:
Radio Science. 4:327-334
Measurements of the phase difference between the signals from ionospherically propagated radio waves received on a vertical whip antenna and on a horizontal dipole at the same location are shown to lead to an estimate of the relative powers in the or