Re: Making AC to DC??

--- In CAD_CAM_EDM_DRO@y..., "jeffdavis516" <cadman@p...> wrote:

> I am wondering if there is any information out on the web or maybe
> from someone here about the hows and rules in making DC power
> supplies?

As for web resources, a quick google search should net some good
sources.

The general rule that I go by is:

DC voltage will equal AC Volts * 1.4 after the bridge rectifier. The
capacitor is used to filter the ripple voltage down to a reasonable
level and should not affect the final voltage much, if any.

My current power supply project has a 40V toroidal transformer.
After the bridge rectifier and cap, I am seeing 55-56V DC on a true
RMS meter. I am using a 13000mfd 80V capacitor to filter.

I'd also recommend reading this white paper:

http://www.geckodrive.com/support/pdf/power_supplies.pdf

After asking a very similar question on this forum, I was pointed to
this resource and it was very informative.

Hope this helps a bit.

Chris