Stabilizing power supply

[Goose80]

I got 2 transformators: from 230V to 24V at 26A
like them here:


I am planning to use bouth in series to get 48V and 26A.
My stepmotors ar 6A each and I have 4 of them.

How to stabilize those transformators?

[audioandy1762]

Hi Goose

Just remember when you rectify your secondary voltage, the ouput will be about 1.4 times greater.

24v x 1.4 = 33.6v


Andy

[Al_The_Man]

Originally Posted by Goose80 How to stabilize those transformators?

What exactly do you mean by 'Stabilize'? Rectify? Regulate? etc?
Al.

[Goose80]

Stabilize = regulate...

I am planning to buy Gecko203V. Maybe I do not need regulated power supply and I can wire transformators direct to geckos?

[Al_The_Man]

You do not necessarily need regulated supply for Steppers/servo's, but you will need a bridge rectifier and electrolytic capacitors.
Search these forums for details or Google for building power supply.
Al.

[Willbird]

Actually from my limited research a regulated supply is sort of contraindicated in many cases, they FREAK if they see power coming back INTO them like will happen with steppers anyway.

We had a bonehead maint man that tried to put APS on the 110 supply for our OKK's, when the spindle would dynamic brake the APS would freak out and shut down..

Bill

[kreutz]

I am planning to use both in series to get 48V and 26A. My stepmotors ar 6A each and I have 4 of them. How to stabilize those transformators?

There is a difference between Rectification and Regulation.

Rectification is converting the Alternating Current Voltage (AC) into Direct Current Voltage (DC)

Regulation (in AC or DC) is maintaining the output voltage or current constant with time.

You need DC to feed the Geckos, so you need Rectification. and Filtering (smooting the DC by reducing voltage ripple, that is the function of the Capacitors after the rectifiers).

You don't need Regulation of the rectified voltage for the motors unless your Power line fluctuations are over +/- 15%

The term "Stabilized" or "Stabilizing" is sometimes used to refer AC voltage regulation.

[Megahertz]

I am using a similiar transformer in my PS design. The big transformer I have came out of 24 volts battery charger. If think the 24V charger was used for golf cart or forklift charging. When I disasembled the charger, I noticed the transformer was wirid for full wave recification with a center tap (2 diodes and the center tap). This gave ~33 volts DC. However, I plan on wiring my PS for full-wave bridge (4 diodes and no center tap). This configuration will produce about 70 volts. My point is you might be able to use only one transformer in your design.