Power Supply Tripp Lite APS750?? - RC-Monster Forums

lucias · **Power Supply Tripp Lite APS750?? -** 09.05.2008, 01:55 PM

I have been borrowing a friends power supply for the time being to get me by until I have found the power supply I want and I think I have found it... Tell me what you think.. Oh yea I have a Hyperion Duo charger charging to 5s batteries..

It is a Tripp Lite APS750
http://www.tripplite.com/EN/products...xtModelID=2938

Newegg sells them
http://www.newegg.com/Product/Produc...82E16812120334

It will do 12V @ 72amps if I am reading this right plus it has internal batteries which would be cool if I didn't have a power outlet to get some what of a charge.. What do you guys think?

Arct1k · 02:08 PM

Unless I'm reading it wrong it is an inverter - Designed to take DC and convert to AC - This is not going to help you...

This has the juice...

http://www.newegg.com/Product/Produc...82E16817256024 70A

http://www.newegg.com/Product/Produc...82E16817139005 56A

jhautz · 09.05.2008, 02:26 PM

I just got one of these and it does a very nice job. I have charged a 5s 6000mah pack and a 5s 5000mah pack on it at the same time and it didnt have any issue. I was a little leary at first because of the price, but I wanted a 2nd PS for running multiple chargers at home so I figured Id try it for the price and a 2nd PS. So far it seems solid and a very nice price. It now has actually replaced my other PS as the primary because it looks better sitting out on the bench than my old PS I converted myself.

http://cgi.ebay.com/ws/eBayISAPI.dll...2BSI%26otn%3D4

BrianG · 09.05.2008, 02:41 PM

If you can, try to boost the voltage as high as possible up to ~14.5v. That extra voltage means the load will pull less current, and it'll run better.

jhautz · 04:23 PM

how would that be done? I wished it was a bit higher when I first got it, but it doesnt seem to have any issues suppying at 12.2v. I know it would make it easier on the charger as well not to have to upconvert the voltage as much.

It runs right now at a constant 12.2v no matter what load is on it. Ive only tested it up to 22A so far, but up to ther is stays constant at 12.2. My charger has an input voltage and Amp monitor that you can see while its running.

BrianG · 09.05.2008, 02:53 PM

There are a few ways to do that with normal PC PSU depending on design:

1: Look for a small PCB mounted pot and make small adjustments to see if it tweaks the voltage or something else.

2: Load down another rail. If this is truly a 12v PSU only, that can't be done.

3: Look for a voltage feedback wire and trick the PSU into thinking the voltage is lower than it really is, so it boosts the output.

lucias · 09.05.2008, 03:45 PM

Quote:

Originally Posted by Arct1k

Unless I'm reading it wrong it is an inverter - Designed to take DC and convert to AC - This is not going to help you...

This has the juice...

http://www.newegg.com/Product/Produc...82E16817256024 70A

http://www.newegg.com/Product/Produc...82E16817139005 56A

Correct me if I am wrong but this does both.. It has a 110v plug so you can charge the internal batteries and run DC devices and it can also do the reverse run off a car battery for instance and power 110 devices..

That's why I posted this, I didn't want to spend the money and end up with the wrong thing...

lucias · 09.05.2008, 03:48 PM

Quote:

Originally Posted by BrianG

2: Load down another rail. If this is truly a 12v PSU only, that can't be done.

What do you mean by load down another rail? I have looked at making my own power supply and when I read the tutorial from my understanding you can combine them to raise the volts or amps if I am reading it right.. but I am probably misunderstanding it...

BrianG · 09.05.2008, 04:08 PM

Quote:

Originally Posted by lucias

What do you mean by load down another rail? I have looked at making my own power supply and when I read the tutorial from my understanding you can combine them to raise the volts or amps if I am reading it right.. but I am probably misunderstanding it...

Computer power supplies have a 3.3v, 5v, and 12v main supplies. The PS circuits sometimes measure the current flow of one of these rails to provide regulation feedback. Since all three rails use the same main transformer, when the PSU increases the PWM signal for more power to one rail, all three get a boost. From experience, it just makes the 12v supply more stable, but doesn't help increase the voltage much, but it depends on the design.

The best methods for actually increasing the output voltage appreciably is to tweak a PCB mounted potentiometer, or use the feedback voltage sense wire. But these methods require certain features to be present, and many PSUs don't have that.

jhautz · 09.05.2008, 04:25 PM

I guess that would require me to break that little seal that says "warrante void if broken" so I'll just use it like it is for now.

Quote:

Originally Posted by BrianG

There are a few ways to do that with normal PC PSU depending on design:

1: Look for a small PCB mounted pot and make small adjustments to see if it tweaks the voltage or something else.

2: Load down another rail. If this is truly a 12v PSU only, that can't be done.

3: Look for a voltage feedback wire and trick the PSU into thinking the voltage is lower than it really is, so it boosts the output.

BrianG · 09.05.2008, 04:27 PM

lol, good idea.

What's_nitro? · 07:22 PM

Quote:

Originally Posted by lucias

Correct me if I am wrong but this does both.. It has a 110v plug so you can charge the internal batteries and run DC devices and it can also do the reverse run off a car battery for instance and power 110 devices..

The 12V output is to charge batteries only, which are external. It isn't intended as a PSU. Plus, even if it were, it's only rated to 20A. It has the 120V "input" only to charge said batteries, and act as a feed-through when AC power is available. Besides, $440 is a bit much for a 20A PSU. I guess if you NEED a backup supply for your shop it would work. You would also need a 12V battery to hook it to, then just use that battery for the 12V power.

lucias · 09.05.2008, 08:56 PM

Yea I was reading it wrong... It would be cool if it worked like I was thinking it did...

Anyhow the place I have been consulting at just gave me a huge Astron 13.8v rack mount 50a power supply..

I might have to get something smaller to lug around to races...

What's_nitro? · 09.06.2008, 01:18 AM

Nice. Do they have any more they can part with?

BrianG · 09.06.2008, 01:29 AM

Quote:

Originally Posted by lucias

Yea I was reading it wrong... It would be cool if it worked like I was thinking it did...

Anyhow the place I have been consulting at just gave me a huge Astron 13.8v rack mount 50a power supply..

I might have to get something smaller to lug around to races...

Just put some wheels and a BL setup on it.