Recent content by esso

around 0.5 ohm between any two connected terminals (1,2,3) or (7,8,9). Having the extra set of poles and wires doesn't explain why are they connected. i'm beginning to think that there's something wrong with them (they're made in the eighties after all) , but what's the odds that all 6 of them...

1485 RPM , 3 phase motor

hey guys... i have 6 motors at work, 380V, 50Hz, 200 HP. the terminals are labeled 1,2,3,7,8 and 9. continuity test showed that 1,2,3 are connected together, and 7,8,9 are connected together. how is that possible ?? am i missing something ?? note that that is the case in all 6 motors. thx

i'm supposed to design a boost converter with the following parameters: supply voltage = 9-15 v output voltage = 18 v output current = 0.1 - 2 amp voltage ripple = 5% efficiency = 80 - 98% i came up with the following: let f= 30 KHz min C=12.3 uF min L=375 uH average supply current = 4 ampi...