Help with a DC question

paul 2 posted:

Today at the Kirkland Ohio show I found these and bought them. They say 16 volt ac to 12 volt dc. What I am planning to try is hook up one of these to a dc module that is 12 volt dc but I can turn down the dc output to 4.5 volts. I was planning on getting my power from the accessory post on a Z4000. Question is the posts are 14 volts ac. So would 14 volts going in to the converter make the dc coming out less then 12 volts dc. If they don't work I am not out much money and will just try another way. Any help is appreciated. Pic. Thanks Paul.

 

Hi Paul,

You'll get about 10.5Vdc out.

Lou N

Thanks Lou. One more question. The modules I have on order are 12 volt dc in and I can adjust the voltage going out. Do these modules have to have the full 12 volts going in for them to work right. Thanks Paul

This is $5.10 with shipping, ebay #: 321657019357  If you buy more than one, the extras drop a buck to $4.10 each.  You can set the DC output voltage to whatever you like, and I easily get more than an amp out of these without any issue.  The 3A rating is a bit over-rated.

GUNRUNNERJOHN, this is a pic of what I have on order. Will less then 12 volt DC going in effect the module working properly. Thanks Paul

paul 2 posted:

Thanks Lou. One more question. The modules I have on order are 12 volt dc in and I can adjust the voltage going out. Do these modules have to have the full 12 volts going in for them to work right. Thanks Paul

Paul,

If all else fails bring them over and we will tweek as necessary.

Lou N

If you're getting "constant" (as the Atlas box says) 10.5V DC you're fine.  Adjust your module for 4.5V DC output on the digital display.  The converter can also display the input voltage by pressing a tiny black button if you're curious what's coming out of your Atlas converter.  Here it is in action - though I'm showing just a bridge-rectifier on the input for the AC-to-DC conversion (rather than you Atlas converter).