Hello!
I've recently built a few stepper motor drivers, this design: PICStep.
While looking for a suitable power supply to feed the (bipolar) steppermotors (I've got 2 types, see attached datasheets for info),I found a couple of thoroid transformers. Input voltage 220v AC, output 42v AC, 60VA. After a rectifier and 2 capacitors, I am getting ~60V DC. Under load this drops a few volts.
The Steppermotor drivers are using LMD18245's. These IC's are specified to run at 55v, 3A continuous, 6A peak. I've limited the PICStep drivers to 1A by using a 20K resistor. (seems like a safe value for these steppermotors to start with.)
My question is, are these PSU's (I have 3 throdoid transformers + rectifying circuit) suitable? Is the 60VA rating sufficient? I feed 'm with linepower, which here 230V. (The Netherlands). What load is safe? Can I amp the stepperdrivers higher than 1A?
Regards,
Hamish
Amsterdam
I've recently built a few stepper motor drivers, this design: PICStep.
While looking for a suitable power supply to feed the (bipolar) steppermotors (I've got 2 types, see attached datasheets for info),I found a couple of thoroid transformers. Input voltage 220v AC, output 42v AC, 60VA. After a rectifier and 2 capacitors, I am getting ~60V DC. Under load this drops a few volts.
The Steppermotor drivers are using LMD18245's. These IC's are specified to run at 55v, 3A continuous, 6A peak. I've limited the PICStep drivers to 1A by using a 20K resistor. (seems like a safe value for these steppermotors to start with.)
My question is, are these PSU's (I have 3 throdoid transformers + rectifying circuit) suitable? Is the 60VA rating sufficient? I feed 'm with linepower, which here 230V. (The Netherlands). What load is safe? Can I amp the stepperdrivers higher than 1A?
Regards,
Hamish
Amsterdam
Attachments
-
120 KB Views: 12
-
53.6 KB Views: 10
-
1.1 MB Views: 9
Last edited: