Re: Transformer question

Check the wiring too.

if it is a large unit it may have multiple inputs and outputs. these
can be used to connect different parts of the windings to allow you
to get different voltages. The large units I have come across have
had quite a few combinations.

Also, there is a way to determine the power capability of the unit by
measuring the frame. I don't have the calculation but it was done by
measuring the metal core.

Maybe someone could post the formula ? or you could search this site
for the link.

Dave

--- In CAD_CAM_EDM_DRO@y..., "Tom Murray" <thomasm923@a...> wrote:
> I will soon be making a power supply for some servo motors. I have
a
> large transformer that I pulled from a piece of equipment my
company
> was getting rid of. It produces about 30 volts and judging from the
> size of the wires, I think it can supply at least 15 amps. More
than
> enough for what I need. Unfortunately, the servos that I want to
use
> are rated at 24 volts, so before I go looking for another
> transformer, I would like to ask the group if there is a way to
> limit the voltage of this transformer. It seems to me that I
> remember seeing circuits that used a zener diode to reduce voltage.
> Am I way off base here, or can this be done?
>
> Thanks,
> Tom Murray