tailieunhanh - Industrial Control Wiring Guide 2E Episode 3

Tham khảo tài liệu 'industrial control wiring guide 2e episode 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 2. DRAWINGS . Switch types 50. Push button switch momentary. 51. Push button push on push off latching . 52. Lever switch two position on off . 53. Key-operated switch. 54. Limit position switch. . Diodes and rectifiers 55. Single diode. Observe polarity. 56. Single phase bridge rectifier. 14 2. DRAWINGS 57. Three-phase bridge rectifier arrangement. 58. Thyristor or silicon controlled rectifier SCR -general symbol. 59. Thyristor - common usage. 60. Triac - a two-way thyristor. . Miscellaneous symbols 61. Direct Current DC . 62. Alternating Current AC . 63. Rectified but unsmoothed AC. Also called raw DC . 15 2. DRAWINGS 64. Earth ground connection. 65. Chassis or frame connection. 66. Primary or secondary cell. The long line represents the positive pole and the short line the negative - pole. 67. A battery of several cells. 68. Alternative battery symbol. The battery voltage is often written next to the symbol. .

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