Results 261 to 270 of about 968 (290)

New sinusoidal pulsewidth-modulated invertor

Proceedings of the Institution of Electrical Engineers, 1975
Sinusoidal p.w.m. invertors depend intrinsically for their operation on quite complex modulation processes. An in-depth study of these modulation processes is presented and the sources of possible operational problems are identified. These problems are shown to be manifest in low-frequency harmonic distortion and the possible existence of subharmonics ...
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Bioprosthetic valve holder and strut invertor

Indian Journal of Thoracic and Cardiovascular Surgery, 1992
A simple and inexpensive method of holding and inverting the strut of a bioprosthetic valve is described.
Ajay Kaul, Yasmin Wadia, A. P. Chaukar
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Reliability of Isokinetic Torque Values for Ankle Invertors and Evertors

Journal of Orthopaedic & Sports Physical Therapy, 1990
Partially funded through a grant from the Children's Hospital Los Angeles, School of Physical Therapy Alumni Association. The main purposes of this study were to determine the reliability of an isokinetic, inversion/eversion torque test with and without range of motion targets, as well as to assess the effects of a plantarflexion position and of limb ...
M, Leslie, J E, Zachazewski, P, Browne
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Invertor compensation in Germany

Institute of Legal Myongji University
In Germany, company employees who make invention during the term of their employment, so-called “service inventions”, are subject to the German Act on Employee Inventions, which regulates the rights and obligations of both employees and employers. There are statutory guidelines as to the amount of compensation the inventor should be paid.
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Magnetic-film-controlled invertor and isolator

Proceedings of the Institution of Electrical Engineers, 1964
The paper describes the principle of operation of an arrangement of conductors that is closely coupled to a magnetic film and can act as a signal invertor, modulator or isolator. The transmission characteristic is determined by the currents flowing in control conductors, which alter the film permeability.
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New 3-phase invertor circuit

Proceedings of the Institution of Electrical Engineers, 1968
A 3-phase variable-frequency invertor is described. It is capable of controlling the output voltages by an on-off method. The commutation circuit is simple, and is so arranged that the invertor output voltages are independent of the load conditions. The triggering circuit and a protection scheme are also described.
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Invertors' inbox

Engineering & Technology, 2010
M. Sheahan, P. Andrews
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Analytical methods for invertor-fed induction motors

Proceedings of the Institution of Electrical Engineers, 1975
Invertor voltage waveforms for variable-frequency inductionmotor drives are frequently of a discontinuous form. One approach to steady-state analysis is to approximate periodic waveforms by a truncated Fourier series. As a less restrictive alternative, suitable for those commonly occurring cases where the piece-wise continuous sections can be described
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Sinewave thyristor parallel invertor with improved commutation

Proceedings of the Institution of Electrical Engineers, 1966
The method of commutation is of fundamental importance in an invertor, and good commutation makes for successful operation of the circuit. This paper describes an improved method of commutation for the parallel-type invertor, using two separate capacitors to store energy instead of one as in the conventional circuit.
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invertor, n.

2023
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