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31. The double-bucket hoist system used in the main shaft at Fank ou Mine is a thyristor DC driving system made by Symons Company. The location control loop used is a digital control technology.

32. This paper presents the monitoring and self diagnosis technique with single chip microprocessors for the real time faults of thyristor devices.

33. Gate Turn-Off Thyristor is a kind of power electronic element. It can control both on and off.

34. Its main return circuit adopts thyristor contactless switch, so can turn off circuit quickly, precisely and reliably.

35. This equipment adopts a thyristor excitation DC generator-motor set with a field weakening regulation device working in step with loading.

36. This paper first presents and proves a theorem revealing the qualitative relationship between the initial conduction angle and the step change in thyristor firing angle.

37. The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.

38. The enduring voltage structure and features of Gate Commutated Thyristor(GCT) were analyzed briefly.

39. Has confirmed this method validity through twelve pulse controlled rectifier thyristor circuit fault diagnosis simulation result.

40. Optically triggered MOS gated solid state relay is a new switching device, which is composed of an MOS gated thyristor, a phototransistor, an enhanced mode MOSFET and a Zener diode.

41. The zero voltage trigger for thyristor can be realized with simple transistor circuit.

42. The phase debugging method of the thyristor rectification circuit is introduced.

43. This scheme uses optical cable to transmit signals and isolate high voltage, Schmitt trigger to dispose of signals, and microprocessor to identify the status of thyristor.

44. The author bas joined in and auc- cessfully accomplished a PFM DC regulated power supply using high frequency fast switching thyristor, which has been adopted in practical application.

45. DY Model caterpillar type shaped plastic material drawer adopts double caterpillar drawing method, thyristor stepless governor.

46. The transient process of graded series capacitor during grade change controlled by thyristor is studied.

47. The thyristor can be trigged into the on-state by applying a pulse of positive gate current for a short duration provided that the device is in its forward blocking state.

48. The term "thyristor" came from its gas tube equivalent, thyratron.

49. First,(http://sentencedict.com/thyristor.html) the factors that influence the blocking voltage BVAK of power static induction thyristor (power SITH) are discussed and some new anode structures are proposed to improve it.

50. The induction heating appliance of thyristor have been widely used in industry because of its high efficiency , easy control and no pollution .

51. Japan Sansha Electric Co. , Ltd. : SCR, three-phase rectifier bridge, Single-phase rectifier bridge, diode modules, single-, two-phase thyristor.

52. In order to turn off thyristor unfailingly, the inverter circuIt'should be rebuilt.

53. The graded series capacitor in TCSC(Thyristor Controlled Series Compensation) lowers the adjustable inductance capacity and the cost.

54. With the development of power electronics, welding machine has experienced four stages: AC, silicon diode rectifier, thyristor rectifier and IGBT inverter.

55. On the basis of synthetical test, the paper analysed the torsional vibration of the main drive system of 1150 blooming mill, which used thyristor power supply.

56. The main control system includes the synchronous signal generating circuit, the testing circuit of thyristor cut-off voltage and the trigger circuit of the thyristors etc.

57. Methods of controlling inductive load noise, and measures of resisting interference causd by the widely used thyristor ...

58. The inner part of the utility model is composed of a submodule control circuit, a bidirectional thyristor, a relay and other parts which are formed by making use of hybrid technique.

59. The main products include IGBT Module, IPM Module, MOSFET Module, Thyristor Module and Diode Module.

60. If the line voltage is less than 80% of the nominal voltage, the thyristor unit is.