Fechter's Mini Meanwell Limiter Board

[hillzofvalp]

gotta love US only shipping! I will report back to you guys how my arduino cut-off goes and whether or not the thing actually goes into safe mode from pulling so much current. (50.4V fully charged.. using a 51.4V, 2950W supply.. cut off at around 3.42V/ cell to start out))

[ZOMGVTEK]

Those 48V 3KW HP Supplies can be found for about $30 shipped or less.

http://www.ebay.com/itm/370546352126?ss ... 245wt_1413

This seller will take $30, and $25 if you buy more than one.
Look a little harder next time.

[Arlo1]

Those 48V 3KW HP Supplies can be found for about $30 shipped or less.

http://www.ebay.com/itm/370546352126?ss ... 245wt_1413

This seller will take $30, and $25 if you buy more than one.
Look a little harder next time.

Hey thanks. Server suppy sent my money back said to out of country they need orders more then $500 and with a fedex or ups account
Thing is when I serch ebay it goes to ebay.ca not .com and now I need to ok shipping to canada from that link because they dont have canada listed in their shipping.

[ZOMGVTEK]

It's definitely a much larger hassle to ship out of the country. If you're just buying one, I know I wouldn't be into dealing with shipping it to Canada.

If you're buying a few of them, and ask nice, it shouldn't be an issue.

[Arlo1]

frock that link 100% wont ship to canada and I can not even send the seller a mesage even if I wanted to offer 1000 extra
Anyone want to ship one of these to canada for me?

[Arlo1]

It's definitely a much larger hassle to ship out of the country. If you're just buying one, I know I wouldn't be into dealing with shipping it to Canada.

If you're buying a few of them, and ask nice, it shouldn't be an issue.

Dude its the same to ship in the country as it is out of it. I will pay the extra shipping but its no harder you just go to the post office and tell them where it has to go!

[ZOMGVTEK]

Something like that. For me, I can ship UPS at work, and we get a good discount, so the stuff is generally cheap. I'm already there, and I just print and stick a label on the box. Most places appear to be the same way.

Shipping UPS/Fedex out of the country is EXPENSIVE. You need to go USPS, and most places don't use them regularly, so you need to go out of your way to drop it off at the post office, and fill out a customs form, and occasionally it gets 'stuck' in customs for a week or two. When you're not getting much out of the deal, its simply a hassle, and then the buyer complains about why its taking weeks to show up. I've shipped stuff for eBay internationally many times, and it generally ends up resulting in a hassle, so I try to avoid it.

I don't really have a problem shipping the stuff to you if you want, but it would probably be a slow process.

http://www.cbiusa.com/index.htm
This place probably would be faster than me, and its $6.

[Arlo1]

Something like that. For me, I can ship UPS at work, and we get a good discount, so the stuff is generally cheap. I'm already there, and I just print and stick a label on the box. Most places appear to be the same way.

Shipping UPS/Fedex out of the country is EXPENSIVE. You need to go USPS, and most places don't use them regularly, so you need to go out of your way to drop it off at the post office, and fill out a customs form, and occasionally it gets 'stuck' in customs for a week or two. When you're not getting much out of the deal, its simply a hassle, and then the buyer complains about why its taking weeks to show up. I've shipped stuff for eBay internationally many times, and it generally ends up resulting in a hassle, so I try to avoid it.

I don't really have a problem shipping the stuff to you if you want, but it would probably be a slow process.

http://www.cbiusa.com/index.htm
This place probably would be faster than me, and its $6.

Thats pertty sweet! But i will find someone who will ship it to me usps. If you were interested I could paypal you extra $ if needed. Im going to go double check ebay.

[ZOMGVTEK]

Thats pertty sweet! But i will find someone who will ship it to me usps. If you were interested I could paypal you extra $ if needed. Im going to go double check ebay.

I'd be fine with that. I have a Canadian friend who ships me stuff all the time, so I do understand that it probably sucks dealing with companies not wanting to ship international. As a company policy, its a bit odd they choose that. He claims theres a lot of stuff he just can NOT get shipped to Canada. I'm fairly close to the border, so he just comes and picks the stuff up, then smuggles it back. A lot cheaper than shipping very large and heavy items. I would imagine the HP supplies would be pricey to ship to you, but they're still damn cheap.

EDIT: Did you know Nanaimo, BC is 2,800 miles away from me? Thats quite far.

As far as shipping goes, the flat-rate boxes tend to be the best bet, by far.
Heres the 'Medium'...
13-5/8" x 11-7/8" x 3-3/8"
or
11" x 8-1/2" x 5-1/2".
Maximum weight 20 pounds.

$28. How big are those HP supplies? Probably big.

[Arlo1]

Thats pertty sweet! But i will find someone who will ship it to me usps. If you were interested I could paypal you extra $ if needed. Im going to go double check ebay.

I'd be fine with that. I have a Canadian friend who ships me stuff all the time, so I do understand that it probably sucks dealing with companies not wanting to ship international. As a company policy, its a bit odd they choose that. He claims theres a lot of stuff he just can NOT get shipped to Canada. I'm fairly close to the border, so he just comes and picks the stuff up, then smuggles it back. A lot cheaper than shipping very large and heavy items. I would imagine the HP supplies would be pricey to ship to you, but they're still damn cheap.

EDIT: Did you know Nanaimo, BC is 2,800 miles away from me? Thats quite far.

As far as shipping goes, the flat-rate boxes tend to be the best bet, by far.
Heres the 'Medium'...
13-5/8" x 11-7/8" x 3-3/8"
or
11" x 8-1/2" x 5-1/2".
Maximum weight 20 pounds.

$28. How big are those HP supplies? Probably big.

I will get the mesurements but I have another es member working an angle on these for me so just hold on! Thanks though!

[hillzofvalp]

ebay seller told me this: The actual weight is 14lbs, the shipping weight which includes a double-walled box and Insta-Pak Foam-In-Place Packaging is 17lbs. The dimensions are 26"x9"x7".

[ZOMGVTEK]

The ship weight on mine is listed at 14.4Lbs. I just got one to mess around with, since a not very adjustable 48V out and 200V+ input is not ideal for me.

It will be here friday. I can weigh/measure it and see the best way to ship these international. USPS flat rate boxes are fairly cheap, for some reason they charge 2-3x more if you use your own box. If a few fit well into one of those, it could be economical.

[Arlo1]

The ship weight on mine is listed at 14.4Lbs. I just got one to mess around with, since a not very adjustable 48V out and 200V+ input is not ideal for me.

It will be here friday. I can weigh/measure it and see the best way to ship these international. USPS flat rate boxes are fairly cheap, for some reason they charge 2-3x more if you use your own box. If a few fit well into one of those, it could be economical.

Shit. Uhm I just sent e-tard 100 bux for 2 shiped to canada him and I went in together for 4 of them!

[ZOMGVTEK]

$50/ea isn't that bad. They would be $25ea to get to me, and then I would need to get them to you. It probably would cost me $20-40 to ship two to Canada...

[Arlo1]

$50/ea isn't that bad. They would be $25ea to get to me, and then I would need to get them to you. It probably would cost me $20-40 to ship two to Canada...

Yeh Im just saying thanks for all your guys's work!
I have a feeling I will have a give e-tard some more money for shipping but we will see.

[etard]

We need to start another thread when we get into these, pretty sure it's off topic in this Fechter limiter thread.

To get back On Topic, I ordered enough parts from Mouser to make 4 limiter boards, so I'm just gonna take some project boards from Radio Shack and build them up. It wil be my first of such endeavors, I hope it's mostly straightforward.

[ZOMGVTEK]

I got mine today, and its HUUUGGE! A serious looking supply for sure.
I started a thread where we can throw all info on these supplies.

viewtopic.php?f=7&t=32829

[hillzofvalp]

fechter,

Will this circuit for the 24-35V range work okay with the 600W 24V series (SE-600-24) meanwells? Do you have any boards left?

Thanks!

[fechter]

I haven't seen one of those supplies, but I assume it is similar to the smaller ones.
At that current level, I think the shunt would need to be doubled up, but otherwise should work OK.

I don't have any of the newer boards left, but I have a few of the older ones that require a little modding with jumper wires. They only have one spot for the shunt though, so would take some modding for two shunts.

It wouldn't be that hard to make one on a perf board.

I'll dig around in the files and post the latest configuration when I get a chance.

[hillzofvalp]

Thank you.. I figured the perf board wouldn't be that hard either. It would need to be two beefier shunts in parallel, that each have double the resistance of the one in the BOM, correct?

[fechter]

Here's the schematic again:

Mini Limiter Board schematic.jpg (39.7 KiB) Viewed 386 times

Here's the board layout:

Mini Limiter Board Layout.jpg (63.51 KiB) Viewed 386 times

Here's the Mouser BOM:

652-3362F-1-102LF|1
594-K104K15X7RF5TH5|2
512-1N914B|1
66-OAR5R005FLF|1
270-160K-RC|1
270-4.7K-RC|1
512-LM358AN|1
512-LM78L12ACZX|1

For 48v operation, add 24v zener:
78-1N5252B|1

For 36v operation, add 12v zener:
78-1N5242B|1

Optional socket for op-amp:
571-1-390261-2|1

[jana]

Will this work for the 48V 1200W version SCN-1K2-48?
Any left?

[fechter]

Sorry, no boards left, but it's not hard to DIY on a perf board.

Not sure about that model. Most power supplies will work with this though. The trick is to find the spot to tie in the sensing line. For that power level, you will need at least two shunts in parallel to handle the current.

[bobale]

Wait, this just limts current, it doesn't cut charing after the current drops below set point? I'm sure I've seen your schematic for the circuit which does that, but I can't find it now. Can you post it here?

[fechter]

Here it is:

4.2.5.schematic.jpg

(92.87 KiB) Downloaded 3 times