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1. Direct current is current with no reversals in polarity.
2. The wiper motor is a permanent-magnet direct current (DC) one. It is equipped on the front windscreen glass with the mechanical parts of the worm gear.
3. Results indicate that wear under the direct current magnetic field is much lower than that without magnetic field, the wear is reduced with increasing the magnetic density.
4. Today the breakeven point between alternating cur-rent and direct current is approximately 400 miles (640 km) for overhead lines and 20- 25(32- 40 kin) miles for underground cable.
5. A fuzzy model of a direct current series motor was given and a root-mean-square error was used to verify the criterion of 9 fuzzy models.
6. By using slow change direct current little signal in computer on a chip, we can make D/A converter performA/D converter function.
7. Adopted unique ventilation system and non - carbonate direct current motor stabilize the hot airflow.
8. Brushless direct current motor drive system based on DSP in the HVC is researched by digital control manner in the paper.
9. These reliable direct current generators provide a voltage output directly proportional to the rotational speed of the armature shaft and are specifically designed for speed control applications.
10. As compared with the brush-plating with direct current, the sur- face roughness of plated layer is lowerd, its hardness is raised, the binding of plated layer with the base metal is improved.
11. The paper briefly describes the theory of direct current sensor based on magnetic potential self-balance and feedback compensation and the structure of prototype machine based on this theory.
12. Adopted unique ventilation system and rotational direct current motor stabilize the hot airflow.
13. Some kinds of batteries can be recharged by connecting them to a source of direct current.
14. Diodes are electronic devices which rectify alternating current to direct current.
15. In his teens he had begun to fiddle with the concept of a substitute for direct current.
16. It was Edison who designed and introduced the electrical distribution system for incandescent lighting by direct current.
17. Photovoltaics is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect.
18. The influence of bias current and modulation frequency on chaos dynamics of vertical-cavity surface-emitting laser (VCSEL) subject to direct current modulation is investigated by numerical simulation.
19. A power converter circuit (3) drives a switching device by the pulse-width modulated wave for converting a direct current into the three phase alternating current.
20. In this paper, parametric variation method is used in kinematic equation of series excitation direct current motor with different turning velocities.
21. The unit consists of auto air brake switch, commutation transformer, commutation unit, direct current contactors.
22. The alternate current line side realizes the decoupling control of active power and reactive power through double closed loop and the stability of direct current voltages at the same time.
23. The four-quadrant convertor experiment which is under the transient direct current control has been finished. The experimental result proves the correctness of the analysis conclusion.
24. The temperature control system based on DS18B20 adopts C8051F020 and its external interface circuit to carry out the measurement control for direct current manostat power temperature.
25. It is an unilateralism -transforming device, which can dispart high import voltage when inputting and outputting by tums, and outputs low voltage of direct current.
26. This paper introduces the design of an all digital control PWM direct current servo system by using monolithic microcomputer as controller.
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27. Nickel is electrochemical micromachininged using nanosecond pulse power , millisecond pulse power and direct current power.
28. Methods 78 patients were sinus rhythm by oral quinidine or amiodarone or direct current cardioversion.
29. By making good use of the intelligent measure and control function of the Microprogrammed Control Unit, the numerical-controlled and scanned direct current source is designed.
30. The elevator model was made by using devices such as limit switch, nixie tube, direct current motor.
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