Jump to content

is my power supply big enough?


Recommended Posts

I will back up what Plasma said. And to be truthful I did not see anything in your picture to give me any idea as to the current capability of the power supply. Nor have you given any information as to what you are going to hang on your CMD24 boards. So, again it makes it real hard to answer a complex question. I see you did a test with one string of lights (?) or device.

Edited by Max-Paul
Link to comment
Share on other sites

If it turns out to be a real power supply and not a battery charger you might be just fine.  Just be a bit cautious would be my mantra.    A few tests with a meter while running loaded and unloaded would tell you a lot.  If you determine it is a power supply instead of a battery charger, you should be fine. 

It is not the controller I would be so worried about, it is the lights. 

Link to comment
Share on other sites

Hey Portcity that power supply is very stable and can supply up 75 amps and just a little over that but not continuous. the reason i know being that my job is a Comm. Tech. for a Sheriff's Office here we use these particular supplies on several of our Command Centers and believe me they are running alot more than LED lights.

Link to comment
Share on other sites

Yea ive seen a lot of ham radio guys using them.

I started the thread in jest because its such a large power supply for a small application. 99% sure it would work great, but im not going to doubt any of the guys on here that have been doing light displays way longer than I have, without at least hearing them out.

Link to comment
Share on other sites

So the writing on the supply about being a battery charger would be where the problem lies.  12vdc power supplies are terrible battery chargers and can ruin a 12v battery...  the fact that you got this out of a motor home and it says "Battery Charger" on t is what raised the red flag for me.  That is why I said test it and meter it.  Sounds like others have used them and they are indeed a power supply and not a battery charger..

 

Like I said, if it is a stable 12v supply it should be fine.. If it is a true battery charger, not so much..

Link to comment
Share on other sites

AS a HAM radio operator. I have never seen this power supply or heard of anyone using one. Astron is the brand that I am famliar that most of my friends using. I sure as hell would not use anything that is billed as a battery charger. Besides stability for voltage. I want something that is well filtered for ripple and dipping when I go from 1 amp draw for receiving to say 15 or 20 amps draw for transmitting.

Link to comment
Share on other sites

You have to keep in mind this thing is almost 20 years old.

Im not sure if yall are familiar with the workings of motor homes....but they are 90% 12v (at least back then they were) these power supplies were used to run everything when the motor home was plugged in at a campground and more to "maintain" the batteries than "charge" to an extent. The power supply is selectable 12-15v.

But again im just a stupid newb that nows nothing about Christmas lights.

Link to comment
Share on other sites

You have to keep in mind this thing is almost 20 years old.

Im not sure if yall are familiar with the workings of motor homes....but they are 90% 12v (at least back then they were) these power supplies were used to run everything when the motor home was plugged in at a campground and more to "maintain" the batteries than "charge" to an extent. The power supply is selectable 12-15v.

But again im just a stupid newb that nows nothing about Christmas lights.

Actually that makes sense.  at 15v it could charge a 12v battery.. at 12v it could run stuff that was made to run off a battery.. It makes sense now. 

Link to comment
Share on other sites

There is on thing you must keep in mind. I have been a HAM way back in 84 so that is about 30 years. First call sign I got while still down in TX at Kelly AFB. And as a novice I held the call sign of N5HHV. I worked on Radios for the AF and been doing electronics as a teen. Went to a tech school in 11 and 12th grade, grad in 78.

 

Just saying I have never seen a Ham use that as a power supply. Esp if the box says battery charger. Those usually dont care if there is a bit of ripple on the D.C. line. Will TX and RX with a hum on the audio line. But I will also say that every once in a while something will be made above and beyond normal specs. What you might have there according to your last post, sounds more like a battery eliminator. Ifn that is the fact, then the Power Supply is inaccurately labeled. I am Plasma drew our conclusions based on information presented to us. Garbage in, Garbage out.

Link to comment
Share on other sites

"Garbage in garbage out" lol my mother in law says that.

Ill be the first to admit I know nothing about ham radio, I brought it up strictly on what I found by googling the unit to get more info on it sadly there isnt much...but it does seem to be a good stable power source to run the few rgbs im trying to learn on and it was free.

I havnt been around as long as you "old farts" lol, but I have been an automotive tech for the past 20 years, so im not completely ignorant to 12v dc systems.

This whole light display thing is just something I want to play with for some reason. ..hell I dont even live on a good street where people can watch the show. This will be my first year doing a display although I started gathering parts and knowledge about this time last year. I have enough to do a 16 rgb channel/16 ac channel halloween show and a 80 channel ac Christmas show with about 30,000 lights on hand, I know thats a big leap for a first year....but id like to see if I can handle it.

Link to comment
Share on other sites

Well, if that power supply is well regulated, you may find that since you have so much power available from one supply, you may need to do some power injection to get the best use out of it.  Also, fuses are your friend! 

 

You already have over a hundred posts and that is a lot for a newbie! 

 

BTW, Portcity, perhaps us "old Farts" can help you with other stuff along the way.. Just ask and if we can.. we certainly will... 

 

Welcome to the addition!  Now you must open your wallet and bow to the LED gods!  :P

Link to comment
Share on other sites

The wallet has already been date rapped lol, I think I have about 5-6 grand in hardware and havnt done a single show yet.

And now im trying to figure out this rgb stuff for halloween and frankly getting very discouraged with trying to convert the standard sequences I have to rgb easily, I think its easier to start from scratch then to convert

Link to comment
Share on other sites

Just my opinion. But I think programing RGB with the current version of S3 is not very user friendly. But I hear that the brain trust at LOR is suppose to be working on a newer version that will be more user friendly to programming the RGB channels. I would like to see a cursor that is like a paint brush that once a color is selected. You can click on different RGB channels and it will go to that color.

And I assure you most of the electronics in a car are well filtered and almost expect that the inputs will have noisy dirty D.C. signals. While most consumer electronics, require and expect a clean D.C. supply. Hence the reason I too agreed that a battery charger is anything but clean. I see where it also says that it is a power supply. This is highly unusual.

 

But I would imagine that with the advent of more electronics in cars that the charging system is needing to be cleaner and cleaner as the years go by. Wish I still had an O'scope and several different make cars to take a look at the D.C. voltage. Being an old fart makes me remember car systems based on points and the noise those would create on the D.C. bus. I had to add chokes and filter caps to my C.B. and 8 track player to control the hum.

Link to comment
Share on other sites

I need to sit down and learn more of the features of Nut Cracker. If you really want to do more with RGB I hear that Nut Cracker is where it is at. Might of fact I hear that the new version of LOR will incorporate a form of Nut Cracker.

 

A word to the wise. Dont hold your breath as to when the next release of S3 will be. LOR has been working on it from the beginning of this year and no more has been said about when it will come to the table. Bet it will be some time after the first of the year, if not later still.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...