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    DC Servo power supply help.

    Hello, I need to design a power supply for a machine that the control system has died on. The machine is quite old (1989 era...). There are 2 brushed DC servo's that drive 2 axes, these are both 65v, 4.5A, 200w each. I'm replacing the old servo cards and power supply so that I can drive them...
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    measuring 3 phase circuits correctly

    Hello, I've just bought a new piece of machinery for my workshop and wired it into my 3 phase power, the same way as I always do. The machine powered up and worked fine until I noticed a fault showing up on 1 of the motor drives. When reading through the fault codes is states over voltage on...
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    Power supply help

    Hello, I'm looking for some assistance in building a linear power supply for a machine that uses DC servo's. I am replacing some old drives so I can make use of the machine in a different way. The manufacturer of the new servo drives recommends that for every motor amp, 2000uf in...
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    Power supply help

    Hi Guys, I wonder if anyone might be able to lend a hand with helping me design a power supply for a CNC machine I'm retrofitting? Here's what I know: I have 3 x 140v DC servo motors each with a stall current of 35A, continuous approx. 6A. I have 2 x (1 more on order) DC servo drives...
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    Soldering Help

    Hello, I'm looking for a little advice in repairing a PCI card for a PC. The card in question is an industrial data acquisition card with 64 isolated digital outputs. Unfortunately due to my own fault i think i have blown one of the darlington transistor arrays as i was only using 1 output at...
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