无论是哪一种变频器，都大量使用了晶闸管等非线性电力电子元件，不管采用整流方式，变频器从电网中吸取能量的方式都不是连续的正弦波，而是从脉动的断续方式向电网索取电流，这种脉动电流和电网的沿路阻抗共同形成脉动电压降叠加在电网的电压上，使电压发生畸变，经傅立叶原理分析可知，这种非同期正弦波电流是由于频率相同的基波和频率大于基波频率的谐波组成。
CM 800 Lifting Magnet O.S. Walker 1760 lb Capacity
GE General Electric 44A719337-108R03 PAC02 EPM01 Board
CM 800 Lifting Magnet O.S. Walker 1760 lb capacity
Signode banding strapping combination tool AH-114 1 1/4
Signode banding strapping combination tool AH-114 1 1/4
Heavy Lifting Magnet 1760 lb capacity
Nu-Era 10 Drawer Storage Cabinet Tool Box
Sperry Vickers Deceleration Valve Check DT15S2-060-K-11
Signode banding strapping combination tool AH-114 1 1/4
Hydraulic Cylinder approx 14 1/4"Bore 3 1/2' Stroke
Allen Bradley 8000-PG2
Miller CP-302 Welder 300Amp
EG&G Rotron High Pressure Regenerative Blower 20 hp
EG&G Rotron High Pressure Regenerative Blower 20 hp
CBI 55 Chassis BE 236 633 BMRP 354 D G
