Re: need a transformer

Thanks to the 3 who replied.
I am useing basically an isolation tranformer then I got a variac for the power supply. I have been told over and over to get rid of the variac and get a "real" transformer. Art of mach software told me that himself. Mariss of gecko told me that. They both also said to get a transformer that will output the current rated for all 3 steppers put togather and add a tad bit more for a 4th axis.
I am useing 1200oz/in steppers for X&Y and one 1780oz/in for the Z. All of them came from homeshopcnc.com. the 1200s require 6amp, the 1780 requires 6.2amp. You are saying use less amps, I put smaller resistors on the gecko to see if it would work with less amps, made the problem worse. I took the resistors out, didnt help so I put the values in to give me the motors rated current. Cap in the power supply is a 80,000MFD the caps on the drives are 470uF as gecko said. I am not an electronics expert, dont claim to be but I know that my machine isnt working and nothing anybody has said as helped other then get a real transformer.
The problem, the motors insted of moving when a program tells them to move lock up. Its actually ok while jogging around, throw a program in and all hell breaks loose, they stall constantly. Make a rapid feed more then 30IPM on X&Y and more then 10IPM on the Z and your asking for it. I am beginning to think I should sell off the control and just go back the reliable way,,, manual.
Jessie

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