what do U use for 24V power?

looking to switch a few motions over to 24V to see how it performs (improvement etc.)

I am wondering what to use for 24V power. With 12V volts it was easy as a PC powersupply (with correct amperage)has always been suffient, but with 24V it seems like you have to go with a battery from a e-bike or robot or a very (hard to find) box type wall power supply. They both seem to be more costly but at least under $100 U.S.

what does everyone reccomend? here is the wall version (only 8.3 amp max)(connection cables look like they need to be made)

http://www.web-tronics.com/200wat24vols.html

and here is a battery version that can handle a draw of 30 amp

http://www.batteryspace.com/index.asp?P ... ProdID=979

what do you guys think? I assume there are pros and cons to both?

Kyle

I used a PC-powersupply !
Find +12V and -12V .
Use the -12V as GND.

Depending the Amps you need it might serve.
I used it for the 24 V on the SMC-valves.

http://www.batteryspace.com/index.asp?P ... ProdID=979
30A drain and 4200mAh (milli Ampère hours)^^

You could use 2 automotive batteries in row.
24V and 80-90Ah (Ampère hours) hrrr, hrrr. Sounds way bettter

Elektronikjack mentioned ring core transformators for 12V. Dont know how if or how suitable they are for 24V applications...

regards
Christian

Hi, Kyle

Its better to use 2 car batteries in series to get the 24volt. And its not nessasary to be high amp rated. You can use two cheap 40AH for example. Or even two old ones from a car junk yard as long as they don't leak any acid around... :wink:

Regards, Thanos

Renoboss,

your getting 24V out of a 12V PC power supply by using -12V as ground instead? Can you elaborate? Does it double the voltage or something what about the amps. what would a 12V 38Amp PC supply be if rigged up as 24V?

Others,

I will look into the auto bat. in series. I guess I never thought that you can just double the voltage like that.

sounds like there are some lower cost options to get this to work.

Kyle

I've searched for some info on -12 on pc psu. But I could not find psus with more than 1A on the -12V line. That means that its enough to drive vavles, but not suitable to drive motors or other high loads.

@Thanos
Could you tell us why you decided to use a car battery?
12V 30A is enough for wipers, and far cheaper than car batteries. Even 2 psus should be cheaper than a single battery!?

regards
Christian

I only use it to drive my SMC-pneumatic-valves. I choose 24 VDC because they where stocksupply and technically they are a little bit faster in switching.
I didn't know you needed so many amps.

I used a car battery cause it can deliver lots of amp without voltage drop. Computer PSU's drop the voltage if heavily loaded that results in lower motor performances...!

An 100Ah battery could deliver all the 100amp instantly, while PSU are trying to produce them...!

Regards,
Thanos

A lot of the car batteries at the discount auto stores are $50-$60 so two could add up in price. I think junk yard batteries (if they don't leak ) could be cheap for testing.

Thanos, I'll have to test and see if voltage drops alot with the PSU. Haven't noticed that, but I can see this as being true. In your test how much to see it drop. 1 Volt ....3 volts? I am wondering if it is noticable.

I don't think I am going to find a 24V PSU with specs needed. That 8.3 amps was the highest I have seen under $100 otherwise you might as well go battery. Some motor controller brands claim to charge your battery on reversals (seems like it would always stay charged on a motion system ).

ran into this...not to bad. need to figure how long I can run this for, but might be ok at first.

http://www.batteryspec.com/cgi-bin/cart ... oduct=2212

...got to get back to the roll hardware module this is intended for. After some test last night looks like I need to get back to some structural issues before throwing 24V at it.

If anyone runs across a wall power supply that is 24V 15 amps and under $100 let me know. If I end up buying something I'll report back the result. I am hoping for at least 50% more speed....ideally 100% more with 24V

Regards,
Kyle

I am also looking for recommendations and I posted this link in my project thread. Would those amazon LED PSUs work? 24VDC 15A, 360W.

Hi Kjg71, would this help!



Regards Jerry

Arrrgh problem posting a link?????????????????????????

will try again.

Jerry

Yeah, I'm new to the forum and have the problem all the time. Seems to happen with Amazon links for me. For some reason they are being translated to MEDIA tags. What I've resorted to doing is editing in BB code, previewing, and then posting the reply.
The BBCODE looks like this:

Code:

[URL='http://www.amazon.com']Click Here[/URL]

I have these 24v 1000w. https://simukit.com/alimentations/11-alimentation-24v-1000w.html

Thanks @Fluke, looks like a lot of MEANWELL users here. Read the specs and I think they only make them for 220V input, and it would not work with 120V outlets here in Canada.

Looks like the MEAN WELL SE-1000-24 model takes 120V
https://ca.mouser.com/ProductDetail/?qs=4Ewz1atfbqKd24YTAQMbSQ==

Thanks for putting me on the right track @Fluke

Hi phreezee, thanks for the reply, yeah I could see the link included in the message; bit when it was sent the link wasn't there.

Anyways plenty of options on "Amazon" for the power supplies that are in need; that is if you are in Canada, or state side, no so lucky here in Au.

Regard Jerry.