DC load on ebay 89 dollars. - Page 1
Forum section: electronics / general

author: Ca_s12
author_rank: Contributor
timestamp: November 13, 2014, 04:26:34 am
content: http://pages.ebay.com/link/?nav=item.view&id=381051375915&alt=webFound this on ebay, seller has 10+ good price for a 300W load.2.5 - 60V0 - 60AGPIB and rs-232All for 89 shipped.Enjoy.

author: DavidDLC
author_rank: Frequent Contributor
timestamp: November 13, 2014, 05:29:37 am
content: $59.00 on Craiglist:https://losangeles.craigslist.org/sgv/bfs/4726968436.htmlDavid

author: amc184
author_rank: Regular Contributor
timestamp: November 13, 2014, 05:53:08 am
content: Thanks for the heads up Ca_s12. I've been on the lookout for an electronic load for a long time, but there aren't that many for a reasonable price. It's worth noting that the eBay listing includes free shipping, so might be better for those not in LA.

author: GEuser
author_rank: Frequent Contributor
timestamp: November 13, 2014, 06:53:31 am
content: Don't they exist anymore? , I looked on the company site and zero , not anything related either .So question is do they need mains? , if so 240vac available? , I tried to find a data sheet/user manual , nice looking gadget too ..edited , the only other link I could find , picture not big enough to see the mains voltageshttp://www.prc68.com/I/EL1132.shtml

author: ElektroQuark
author_rank: Unknown
timestamp: November 13, 2014, 07:01:25 am
content: Thank you!I have one of their programmable power supplies and they are very good equipment.Those loads appear ramdomly at eBay but a very high prices.

author: carpelux
author_rank: Regular Contributor
timestamp: November 13, 2014, 07:56:26 am
content: Just ordered one.It supports 240V.Thanks to the way back machine, the specs can be found here:https://web.archive.org/web/19980212101659/http://www.amrel.com/el_spec.htm

author: rr100
author_rank: Frequent Contributor
timestamp: November 13, 2014, 11:39:21 am
content: RS232. Not bad!

author: icpart
author_rank: Regular Contributor
timestamp: November 13, 2014, 11:54:35 am
content: Thanks Ca_s12 for sharing with us this great offer.I also ordered one. I am very happy with that purchase. . I am looking for long time for any used electronic load in Europe but prices was to expensive.I paid now double almost double of original price for shipping and import fees to my country but this offer still bargain. So for anyone from USA or CANADA that will be BIG deal.Only I hope to have any manual with package because i can't find any user manual online.

author: GEuser
author_rank: Frequent Contributor
timestamp: November 13, 2014, 12:56:32 pm
content: Thanks carpelux, Baahhh what a time to have a zero credit limit!

author: Kevin.D
author_rank: Frequent Contributor
timestamp: November 13, 2014, 01:08:30 pm
content: Doesn't look that impressive from the front, very minimalist, why hide the input's on the back ? in the ebay advert they would rather show you 2 nice pictures of a box rather the back view. Never heard of Amrel, are these like the 'Mark Vincent' brand of the test gear world. ?

author: lukier
author_rank: Unknown
timestamp: November 13, 2014, 01:10:02 pm
content: Quote from: Kevin.D on November 13, 2014, 01:08:30 pmIt would be difficult to push 60A through the binding posts

author: GEuser
author_rank: Frequent Contributor
timestamp: November 13, 2014, 01:12:37 pm
content: Hey where do you see binding posts? , stuffed if I can ..edited > ahhh I see the red/black wires on the back left hand bottom ..

author: Refrigerator
author_rank: Super Contributor
timestamp: November 13, 2014, 01:46:03 pm
content: US $89.00 Seems like a good price but then.Shipping: $38.73 International Priority Shipping to LithuaniaImport charges: $23.58That's why i can't have nice things.......

author: saturation
author_rank: Super Contributor
timestamp: November 13, 2014, 02:37:19 pm
content: I'd love to see a tear down. Those units are difficult to calibrate when they drift out of spec compared to the pot driven Array 3710.

author: icpart
author_rank: Regular Contributor
timestamp: November 13, 2014, 02:47:30 pm
content: Quote from: Refrigerator on November 13, 2014, 01:46:03 pmYes I paid that final price of 152$ to Bulgaria, but you cant find anywhere new DC Load under 300-400$. Also if you buy from China and when you pay shipping cost and import duties +VAT you will pay 400-500$ final price. So that was bargain offer for that Amrel.

author: JoeD
author_rank: Contributor
timestamp: November 13, 2014, 03:27:10 pm
content: All gone, 20 sold in under 24 hours, just shows the power of getting something like this mentioned on this forum!Still I can't complain I've got one on it's way to me!.....JoeD

author: nctnico
author_rank: Super Contributor
timestamp: November 13, 2014, 10:04:28 pm
content: Too lateA good DC load for $89 is not something to let pass.

author: Smokey
author_rank: Super Contributor
timestamp: November 14, 2014, 12:10:22 am
content: Damn. There needs to be a "Notify by text message" option or something for great deals. I missed it too.

author: amc184
author_rank: Regular Contributor
timestamp: November 14, 2014, 03:13:41 am
content: Wow, they sold fast, glad I got one while the going was good. Thanks for the link carpelux, I was struggling to find anything more than the headline specs. Programmable transients with programmable slew rate is awesome. Given that they're new and in the original packaging, I'm hoping that they'll include a user manual. Has anyone seen a PDF around?

author: ElektroQuark
author_rank: Unknown
timestamp: November 14, 2014, 07:32:01 am
content: I have contacted AMREL about the user/repair guide. They told me the test equipment division was sold to AMETEK in 2010.Waiting for an answer from AMETEK now.

author: rr100
author_rank: Frequent Contributor
timestamp: November 14, 2014, 10:19:45 am
content: Quote from: amc184 on November 14, 2014, 03:13:41 amI'm sure there will be a manual available as soon as they reach some of the eevblog/forum members :-)I missed the detail that those are new/boxed units...maybe for the best as I was in time to take one but really I don't have much use (and space) for it. Even if it would match well my 60V/60A "bigger" Ps.

author: Stigaard
author_rank: Contributor
timestamp: November 14, 2014, 05:02:14 pm
content: I guess it was to good to be true, just received the followingQuote

author: rr100
author_rank: Frequent Contributor
timestamp: November 14, 2014, 05:30:33 pm
content: Do not forget to leave feedback!By the way, I don't know what's happening recently (and by that I mean ~5 years) but such things happen more and more often. Around year 2000 it wouldn't matter what apartment shop you ordered from, you'll get your merchandise - and in a reasonable time. It got worse and worse that at some point if you got a good price (just good but reasonable, not some typo) almost surely you wouldn't see the goods. And no scam (not even incipient), just "can't deliver".ebay was fine for a longer time. Take something from a small shop ("buy it now", neu, etc) you'll have it the same week. But then even there they just can't deliver. Why bother then listing it (which isn't free, and there are fees (for the seller) also for the transaction, even if you give a refund)?

author: lukier
author_rank: Unknown
timestamp: November 14, 2014, 05:45:09 pm
content: I've messaged the seller saying that selling items not in stock is against eBay rules and that's the reply I got:QuoteI don't get it, eBay listing only shows 20 items and 20 are sold.

author: rr100
author_rank: Frequent Contributor
timestamp: November 14, 2014, 06:12:55 pm
content: Just stupid excuses, I've got all combinations. 8 or "more than xxx" listed, want 4 - we don't have, just 3. Or I want 1 - sorry, not available.Let's see how many ARE sent. I predict under 5, more like [0..2]

author: ElektroQuark
author_rank: Unknown
timestamp: November 14, 2014, 07:49:14 pm
content: I have received no news from them. Nothing.

author: electr_peter
author_rank: Unknown
timestamp: November 14, 2014, 07:55:10 pm
content: Quote from: rr100 on November 14, 2014, 05:30:33 pmQuote from: rr100 on November 14, 2014, 06:12:55 pmIs there a possibility that seller has some stock but decided that he will not sell items at current prices (and sell later at higher prices)?After all, cancelled eBay order is potentialy great market research strategy showing huge demand.

author: lukier
author_rank: Unknown
timestamp: November 14, 2014, 08:07:25 pm
content: I replied to the seller that his statement doesn't make any sense (he said: oh, it's because some people bought more than one unit), there were 20 loads available in total and 20 were sold, irregardless of the number of buyers. I don't know where he got the number 38 from. Maybe he sold them on gumtree first (someone mentioned a link on the previous page)?Anyway, I said that I don't want any "unpaid item" in my purchase history so he has to either complete the sale or cancel via eBay and that's what I got:QuoteSomething very suspicious is going on. What's wrong with the sellers these days (except KJDS)

author: nctnico
author_rank: Super Contributor
timestamp: November 14, 2014, 09:14:20 pm
content: I agree. I can't imagine the systems from Ebay allow to sell more items than are available according to the information the seller provided.

author: amc184
author_rank: Regular Contributor
timestamp: November 14, 2014, 09:23:59 pm
content: Damn, I hope I get mine. I haven't heard anything from them yet. Remember that they were listed on Craigslist as well, so maybe he got a whole heap of orders through there as well.

author: philpem
author_rank: Frequent Contributor
timestamp: November 15, 2014, 01:01:00 am
content: I got an email asking for my phone number, and saying they were sending it via Fedex -- despite eBay saying it'd be sent through that ebay "global shipping" thing which sorts out the customs fees for you?!I hope he's not sending it direct to me via Fedex, otherwise I'll be getting a bill for the VAT on $89, the VAT on the shipping, and the £10 Fedex charge, on top of the $45 I've already paid to cover all of that. If that happens, I will not be at all happy...

author: carpelux
author_rank: Regular Contributor
timestamp: November 15, 2014, 05:02:09 am
content: I got the same mail and can only agree with You philpem.Time will tell

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 05:33:35 am
content: Looks like a fairly inactive seller, has been on ebay a while and he reads OK. Looks like he sells old stock from a wide variety of places.http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=s-money-trucks&ftab=AllFeedback&myworld=true&rt=ncAnd yes I ordered one minutes after I saw the post, same phone number Fedex thing. Fedex in my area has marginal service compared to other carriers (mail is often faster).

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 05:50:27 am
content: And here is the sellers .com.http://www.herbeppleent.com/

author: GEuser
author_rank: Frequent Contributor
timestamp: November 15, 2014, 06:04:53 am
content: This does not look good at all fellas , the global shipping takes priority , the ad should have mentioned fedex , and including all that other stuff smells real fishy .I bet it figured out it could ask more so has come up with this smoke , personally I'd all ask for a refund asap , and claim via the bay that somethings up , send the bay a link to the thread too ...Go get im Bay !

author: Smokey
author_rank: Super Contributor
timestamp: November 15, 2014, 06:20:05 am
content: Quote from: pickle9000 on November 15, 2014, 05:50:27 amFunny. this is the guy from the craigs list link at the beginning of the thread. I contacted him about picking one up but he never got back to me.

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 06:24:54 am
content: Quote from: GEuser on November 15, 2014, 06:04:53 amI see the seller as inexperienced and I did check his profile before purchasing. Of course I am from Canada so not as big a deal as other countries.

author: ElektroQuark
author_rank: Unknown
timestamp: November 15, 2014, 07:28:02 am
content: Same message received here. There is a load for me.I asked about shipping with FEDEX and not using eBay system. Let's see.

author: rr100
author_rank: Frequent Contributor
timestamp: November 15, 2014, 07:31:26 am
content: Quote from: GEuser on November 15, 2014, 06:04:53 amIf you pay for global shipping push for it, it's pretty good (it better be as it's more expensive than the usual shipping+customs gamble).For the buyer it's nothing, he just prints the label from ebay and sends the parcel to a US address.

author: rr100
author_rank: Frequent Contributor
timestamp: November 15, 2014, 07:38:24 am
content: Quote from: electr_peter on November 14, 2014, 07:55:10 pmThat is a clear possibility. Or maybe he didn't have all of them and his supplier got wind of this and he wants more.Quote from: electr_peter on November 14, 2014, 07:55:10 pmWith that I do not agree, at least in the cases I referred to (non-niche products). First - negative feedback is very costly in itself (and there are some costs with ebay as well for listing and ending the sale) but the idea is that you have ebay search for "ended items". So you can see clearly (assuming is something that sells at all) at what price it would sell at all (and how fast) for "buy it now" and how many people bid on it and at what level. I don't know why ebay allows it as it's great data but I guess if somebody is really interested and determined is very easy to make a "scrapper" and just look for ongoing actions and then look for them in the past to see how they ended (even if ebay would not let you search for them anymore).

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 07:53:34 am
content: I'm thinking he listed all he had on ebay and crosslisted elsewhere, sold a a few elsewhere and just plain ran sold out. He is used to selling slow over time (niche stuff) and this caught him off guard. He's not an amateur he has a commercial operation.There are rules and this will help him improve his business. I see no reason to nail him for it. Hopefully he will use the global shipping and make everyone happy.

author: JoeD
author_rank: Contributor
timestamp: November 15, 2014, 09:03:19 am
content: Global shipping is a two stage process, the seller sends it to eBay's consolidator and then the consolidator ships to the foreign destination and takes care of the tax etc. So shipping via Fedex is the first part of the process, seller to consolidator. And thinking about it it's actually a three stage process, seller to consolidator, consolidator to country of destination, local carrier to end buyer. At least that's how it works to the UK.JoeD

author: lukier
author_rank: Unknown
timestamp: November 15, 2014, 10:59:21 am
content: Quote from: pickle9000 on November 15, 2014, 07:53:34 amAnd what about those who got the "out of stock" message and crap like 38 out of 20 sold and "cannot cancel - technical hiccup".If this was resolved quickly (cancellation) and without bullshitting I would probably just leave a neutral comment or something like that, but now I'll have to report seller non-performance and write a negative

author: rr100
author_rank: Frequent Contributor
timestamp: November 15, 2014, 12:23:28 pm
content: I don't know precisely what options are to cancel the transaction but some are worse for the buyer so double check anything you click.If you paid by paypal and there are "technical hiccups" to give you refund just open dispute, then the buyer has the option to refund you straight away and the dispute will close (and if he doesn't or if he doesn't answer ebay will do it anyway).

author: lukier
author_rank: Unknown
timestamp: November 15, 2014, 12:53:22 pm
content: Quote from: rr100 on November 15, 2014, 12:23:28 pmIn this case the seller needs to initiate the cancellation, but they don't want to do that as it affects their ratings. So I only got a paypal refund, but still the item is marked as unpaid in eBay. That's why I'm slightly pissed off, not only they sell items they don't have in stock (which is against eBay T&C) but then don't want to set the record straight with eBay and lie in the messages.

author: rr100
author_rank: Frequent Contributor
timestamp: November 15, 2014, 01:16:26 pm
content: You paid by paypal? Normally the item should be marked as paid automatically.

author: AmmoJammo
author_rank: Frequent Contributor
timestamp: November 15, 2014, 01:19:20 pm
content: nah, I've had a number of transactions that I'm meant to accept the cancellation on... and ebay simply doesn't work...I've found I'm able to cancel it weeks after the event takes place...

author: lukier
author_rank: Unknown
timestamp: November 15, 2014, 01:37:46 pm
content: Quote from: rr100 on November 15, 2014, 01:16:26 pmIt was, then I got my money back via paypal and the item is marked as unpaid - I don't want to have any problems because of this, that's why the purchase should be cancelled from the seller side.

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 03:28:31 pm
content: Quote from: lukier on November 15, 2014, 10:59:21 amReporting things like this to ebay is of course correct. If you believe the seller was pulling a fast one then reporting it is not only correct but best for all of us (myself included) Ebay relies on buyers to police the system.

author: pickle9000
author_rank: Super Contributor
timestamp: November 15, 2014, 03:49:27 pm
content: Quote from: AmmoJammo on November 15, 2014, 01:19:20 pmI was told by an ebay rep (last year) that cancellations that have multiple instances (I assumed this be related to be on the sellers side) need to be "released" by a real person (ebay investigator). In my instance the item was pulled by ebay (1/4 inch audio knobs new, less than $2.00 value). Never did find out why.From a grief standpoint purchasing ebay items from the US and Korea has a much higher rate of problems than anywhere else. China, Taiwan, UK, Israel, India, Canada no real issues. Yes, I do order often it's a hobby.

author: GEuser
author_rank: Frequent Contributor
timestamp: November 15, 2014, 05:50:18 pm
content: A bit off da topic but I really would like a Chinese fella or fellete pop in and type"See its not all China that does this what about those Yankee round eyed fat rednecks"And it goes to show something about the Chinese sometimes , they have a bit of Class ..imo

author: ElektroQuark
author_rank: Unknown
timestamp: November 17, 2014, 08:09:18 pm
content: Mine is shipped.Seller has not answer my questions about using FEDEX, BTW.

author: carpelux
author_rank: Regular Contributor
timestamp: November 17, 2014, 09:19:28 pm
content: I also got a message that mina was shipped. I'm not worried about the shipping and taxes, if it turns out that I'll have to pay taxes twice I'm quite sure it can be fixed via paypal as the fees for tax and shipping was separate from the DC load itself.

author: icpart
author_rank: Regular Contributor
timestamp: November 17, 2014, 09:56:59 pm
content: Hi I also receive message for shipment.Meanwhile I find some teardown pictures of that DC Load in this Chinese forum:http://bbs.38hot.net/thread-74660-1-1.htmlEnjoy

author: ManCave
author_rank: Regular Contributor
timestamp: November 17, 2014, 10:13:06 pm
content: Quote from: icpart on November 17, 2014, 09:56:59 pmI love the precision resistors

author: saturation
author_rank: Super Contributor
timestamp: November 17, 2014, 10:59:47 pm
content: NICE! Thanks for the link to photos. Pics are not the clearest but it looks well made, circa late 1990s. The particular layout of the heat sinks and power MOSFETs are similar to desktop eloads by Array, Maynuo, BK, Itech etc., and clones designed since 2000, I wonder if the Chinese eloads I mention took inspiration from this design or are related in some way. This Amrel would be a good buy.Quote from: icpart on November 17, 2014, 09:56:59 pm

author: ve7xen
author_rank: Super Contributor
timestamp: November 18, 2014, 08:03:00 am
content: I have the Amrel LP-302 power supply. Apart from one of the heatsinks rattling around inside when I got it (looks like a bodge - the board was designed for discrete rectifiers on the board, but they air-wired a rectifier module to an extra heatsink pinned into the main one - guess the pins came loose over time) it's fairly well made. Real clunking power switch!I find it amusing that the product literature advertises NO KNOBS! as if that's a feature. Their UI blows, to be honest. I only use this supply for voltages I'm unlikely to change through a project (eg. 5V logic supply) since it's so cumbersome to use. The load should be much better as it has a full numeric keypad. It also beeps on every keypressand whenever switching CC/CV modeswhich is incredibly irritating. There is an undocumented 'hold two keys' code to turn it off, but I don't recall what it is, or you can use RS-232.Anyway, the main of this post is: On the supply, if the calibration data are lost (not sure if my unit has an internal battery or just "loses" its memory after a while) it will output totally wacky voltages (ie. +20V offset) and the readings will bewayoff. Not as dangerous with an e-load, but something to be wary of anyway. As the firmware looks very similar, I wouldn't be surprised if the loads suffer a similar issue. Test the units before use!

author: philpem
author_rank: Frequent Contributor
timestamp: November 18, 2014, 08:12:28 am
content: Got my "it's shipped!" email last night. Still no word from the seller regarding Fedex. That'll earn him zero stars for "seller communication"... not that I expect those ratings really matter.As for cal constants, it looks from the photos on the Chinese site like there's a socketed battery-backed DIP module on the middle vertical PCB. If that is the case, I'll be reading it out and it'll find its way onto KO4BB. Same if there's a firmware EPROM I can read out without stripping the machine to bits.Calibration will be "interesting"... I hope there's a manual with cal instructions included...

author: macboy
author_rank: Super Contributor
timestamp: November 18, 2014, 04:03:19 pm
content: Quote from: ManCave on November 17, 2014, 10:13:06 pmThese brown ones?

author: george graves
author_rank: Super Contributor
timestamp: November 19, 2014, 09:48:35 am
content: Quote from: mojo-chan on November 19, 2014, 09:23:53 amYep - you can leave positive feedback, but slam someone on the stars and it still really hurts them. Ebay did a full knee jerk reaction to bad sellers years back to tilt the scale totally in the buyer's favor. Good for buyers, bad for sellers. (well not in the long run) Many ebay seller sell for a month, start a new account, sell on both, and if one gets too low of a rating they just switch to the back up. And so on, and so on.

author: ManCave
author_rank: Regular Contributor
timestamp: November 19, 2014, 08:57:14 pm
content: Quote from: macboy on November 18, 2014, 04:03:19 pmYep

author: amc184
author_rank: Regular Contributor
timestamp: November 20, 2014, 08:40:51 am
content: Mine arrived, I haven't unboxed it yet but I'll check it out and report here when I get time.

author: Ca_s12
author_rank: Contributor
timestamp: November 21, 2014, 02:32:51 am
content: Mine arrived as well. Factory box but no manual or software just a link to the manual written on a page inside the box. Looks and smells new. When I powered the unit up the lcd and fans came on but the keypad would not respond. I opened it up and the keypad had come unplugged during shipping. Just something to look out for if someone has the same issue.

author: mtdoc
author_rank: Super Contributor
timestamp: November 21, 2014, 03:07:46 am
content: I got one today as well. The link provided to a manual is wrong. It is to a power supply manual. No luck yet finding the correct manual online. Anyone?

author: ElektroQuark
author_rank: Unknown
timestamp: November 21, 2014, 08:17:26 am
content: No. AMETEK has not answered me about the manual yet.

author: Ca_s12
author_rank: Contributor
timestamp: November 21, 2014, 06:12:58 pm
content: In regards to the manual I have one for it comming in the mail and will upload it when it arrives.

author: carpelux
author_rank: Regular Contributor
timestamp: November 21, 2014, 06:33:39 pm
content: That sounds great!A question for those who have received a unit: Does the calibration seem to be reasonable in specs, i.e. not 30 % off or so?

author: Ca_s12
author_rank: Contributor
timestamp: November 21, 2014, 07:00:45 pm
content: Mine does at least at low currents no more than 2% off.

author: mtdoc
author_rank: Super Contributor
timestamp: November 21, 2014, 07:19:38 pm
content: Quote from: Ca_s12 on November 21, 2014, 06:12:58 pmExcellent! Thank you.

author: pickle9000
author_rank: Super Contributor
timestamp: November 21, 2014, 07:30:15 pm
content: Quote from: Ca_s12 on November 21, 2014, 06:12:58 pmVery nice, thanks.

author: ElektroQuark
author_rank: Unknown
timestamp: November 21, 2014, 07:32:45 pm
content: Quote from: Ca_s12 on November 21, 2014, 06:12:58 pmThank you very much.

author: mtdoc
author_rank: Super Contributor
timestamp: November 21, 2014, 07:40:58 pm
content: Quote from: carpelux on November 21, 2014, 06:33:39 pmYep. Mine looks good so far. Tested to 60V and 10A

author: pickle9000
author_rank: Super Contributor
timestamp: November 21, 2014, 07:49:28 pm
content: Original list price (new) was almost 1800.00 USD.

author: philpem
author_rank: Frequent Contributor
timestamp: November 27, 2014, 07:59:20 pm
content: Just got mine this evening - sent via bloody Hermes, which explains why it disappeared off Ebay tracking only to reappear today as "delivered"...Mine arrived pretty much as described in the listing -- an Amrel box (which the seller used to ship it), apparently original foam inserts, and an Amrel EL-1132 with the (somewhat peeling) protective plastic still on the front panel. Amusingly mine reports its serial number as "0000000001" with software version "2.96020040". It displays these on startup (very briefly), but if you hold Enter it'll display them again.The front panel interface doesn't seem too difficult to use without a manual; it's the RS232/GPIB commands which will take some figuring out. There's some data on the Ametek/Amrel PLA series here:http://www.programmablepower.com/electronic-load/PLA/downloads.htm- who knows, the commands might be the same?I've got mine running a 2.5A load test on a lead-acid battery - sadly the cable and/or connectors I'm using seem to be a bit rubbish as I'm dropping ~0.18V in the cable (0.072 Ohms)... I think that might need to be improved before I go any higher. Maybe add some sense wires...Cheers,Phil.

author: pickle9000
author_rank: Super Contributor
timestamp: November 27, 2014, 08:14:29 pm
content: And in Western Canada, mine still hadn't made it.I often have better shipping times from China than with the US. Not sure if that's the shipping system in general or border security. Digi-key is awesome though next day.

author: philpem
author_rank: Frequent Contributor
timestamp: November 28, 2014, 03:04:39 pm
content: If anyone has a burning desire to make one of these do something, the commands (at least over the serial port) seem to be the same as the Ametek / Amrel PLA series:http://www.programmablepower.com/electronic-load/PLA/downloads/M470038-03_PROG_Manual_PLA_PLW.pdf*IDN? - get identity ("AMREL EL-1132,2.96020040")CURR? - get currentCURR? MAX - get maximum currentCURR? MIN - get minimum currentCURR x.y / - set currentVOLT? / VOLT? MAX / VOLT? MIN / VOLT x.y - same for voltageRES? / RES? MAX / RES? MIN / RES x.yINP 0 / INP 1 - input off/onINP:SHOR 0 / INP:SHOR 1 - input short off/onMEAS:POW? / MEAS:VOLT? / MEAS:CURR? - measure power, voltage or currentMODE? - get current mode (CC = constant current)MODE:CURR / MODE:VOLT / MODE:RES - set current/voltage/resistance modeTRAN 0 / TRAN 1 - transient generator off/onThis should get you startedSadly the load doesn't have constant-power mode, though constant-resistance should work as a stand-in:15W load, 5V supply.I = P / V = 15W / 5V = 3AR = V / I = 5V / 3A = 1.667 OhmsOr the shorter way:R = V^2 / P = 5V^2 / 15W = 1.667 OhmsAnd a quick check with Wolfram Alpha:http://www.wolframalpha.com/input/?i=%285V%29+^+2+%2F+%2815W%29Enjoy!-Phil

author: carpelux
author_rank: Regular Contributor
timestamp: November 28, 2014, 04:59:56 pm
content: I received mine today here in Sweden.It's sure is brand new and seems to work OK.I Have no time to test it tonight but will take a closer look at it during the weekend.One thing i saw was that it has the possibility to emulate a HP 6060A och HP 6050A.

author: macboy
author_rank: Super Contributor
timestamp: November 28, 2014, 06:34:16 pm
content: Quote from: philpem on November 28, 2014, 03:04:39 pmUsing constant resistance mode in lieu of constant power is a poor choice. The power will vary with the square of voltage variation. It is better to use constant current mode with I=P/V, since power will then vary proportionally with variation in voltage.

author: pickle9000
author_rank: Super Contributor
timestamp: November 28, 2014, 10:34:18 pm
content: Well mine finally showed up, 2 1/2 weeks after the sale.I have no doubt it is new but the case was opened at some point, 2 screws missing. I popped the cover before powering up. The rom was not fully seated but other than that no issues. Powered up just fine and a quick load test seems fine.

author: philpem
author_rank: Frequent Contributor
timestamp: November 29, 2014, 11:19:25 am
content: Just checked mine on the bench power supply. The voltage range is calibrated OK, but the current is about 15-20% outSet 1A on the load and both my DMM and the bench power supply report a load of 0.85A being drawnAnyone got a calibration manual?

author: carpelux
author_rank: Regular Contributor
timestamp: November 29, 2014, 11:59:24 am
content: I did som e quick measurements on mine and it's also a bit off regarding the current.There seems to be about 27 mA constant offset, so when the load says 1A my HP6633B PSU says 1.027A. if I set the load to 3A the PSU says 3.027, and so on.I tried to set it to use remote sense on the load, but that didn't seem to work at all. It displays 0V then, and there's no change in the current accuracy (which of course is to be expected). Didn't have so much time to put into it, will try more later.

author: carpelux
author_rank: Regular Contributor
timestamp: November 29, 2014, 12:11:24 pm
content: Forget about the problems with remote sense. It was me that made a mistake with a bad cable so there's no problems with the remote sense.

author: philpem
author_rank: Frequent Contributor
timestamp: December 01, 2014, 08:24:43 pm
content: Just got a response from Ametek:Quote

author: amiq
author_rank: Regular Contributor
timestamp: December 01, 2014, 09:14:47 pm
content: I must have got the runt of the litter. The one I received had only one screw holding the cover on (similar to one received by another member). when I took the cover off I found that the two daugher boards were not plugged into the motherboard, and the connector to the frnt panel keyboard was detached (no keying or indication of where pin one was so that took a while to figure out).The funny thing is that the two standoffs that are supposed to support the daughterboards to the case were missing, although a split washer is held to the case by threadlock arround one of the mounting holes, so the standoffs were present at some point.Anyway, it does appear to work, allthough the current measurement is way off (at least a 100mA offset with a scaling error).Can the member that was waiting for a manual in the mail post an update?

author: Ca_s12
author_rank: Contributor
timestamp: December 03, 2014, 07:04:58 am
content: Sorry for the slow reply. Here is the cal information. I will see about posting the manual to KO4BB tomorrow. If anyone is interested in the labview driver just send me a pm, unless someone knows a good place for me to upload the driver. Best of luck to everyone having issues.

author: carpelux
author_rank: Regular Contributor
timestamp: December 03, 2014, 07:41:10 am
content: Thanks!Did You receive the user manual or programming manual as well?

author: icpart
author_rank: Regular Contributor
timestamp: December 03, 2014, 02:59:31 pm
content: Hi guys.I received my DC load today but now I am little scary to turn in onbecause on back side I saw yellow label that supposed the DC load to work at 110V.Also there is red voltage switch for 115/220V operation. Can anyone confirm that I have to put that switch at 220V position for ?uropean supply network.Also it was set at 115V when I received it.Sorry for that silly question but I don't want to blow up that new DC load at first try.

author: Ca_s12
author_rank: Contributor
timestamp: December 03, 2014, 03:10:40 pm
content: The part of the manual that I have is the programing portion.As posted on the first page of this thread, the link from the way back machine, the unit is switchable from 110/230v.

author: carpelux
author_rank: Regular Contributor
timestamp: December 03, 2014, 03:14:47 pm
content: I have it switched to 220V and it'w working as it should on the swedish mains rated to 230V.

author: carpelux
author_rank: Regular Contributor
timestamp: December 03, 2014, 03:18:46 pm
content: Quote from: Ca_s12 on December 03, 2014, 03:10:40 pmOK, thats the most important part I think. Many of the SCPI commands that are listed in the PLA/PLW manuals work on the EL-1132 to.It's great that You cold find the calibrate manual. In order to calibrate it, all that's missing now is a really beefy PSU :-)

author: Ca_s12
author_rank: Contributor
timestamp: December 03, 2014, 03:48:29 pm
content: Ok everyone here is a dropbox link to all the information I have about the load. Included is the programing manual, the labview driver and lastly a word document that lays out the cal of the load.https://www.dropbox.com/sh/9h4uln7p5jmf6ld/AABbiV8RXzY5zO-BEtohlPaka?dl=0

author: icpart
author_rank: Regular Contributor
timestamp: December 03, 2014, 03:52:40 pm
content: Quote from: carpelux on December 03, 2014, 03:18:46 pmThanks a lot Ca_s12 and carpelux for suggestion.For calibration do you think that we can use two ATX power supplies in parallel or the better option is something like thathttp://www.aliexpress.com/item/Supernova-Sale-5V-Led-Power-Supply-60A-300w-Led-Driver-Indoor-switch-power-supply-110-220V/1712935662.htmlQuote from: carpelux on November 29, 2014, 11:59:24 amMy current offset is about 39-42mA in CC mode. Also I have another current offset of about 72mA in CR and CV modes.Also I figured out that offsets are shown on LCD screen when there is no power supply connected to the DC load.

author: ElektroQuark
author_rank: Unknown
timestamp: December 03, 2014, 05:39:16 pm
content: Quote from: Ca_s12 on December 03, 2014, 03:48:29 pmThank you very much. I received mine today. Perfect timing

author: amiq
author_rank: Regular Contributor
timestamp: December 03, 2014, 08:31:34 pm
content: Quote from: Ca_s12 on December 03, 2014, 03:48:29 pmThanks for that, calibration doesn't look too bad.

author: pickle9000
author_rank: Super Contributor
timestamp: December 03, 2014, 09:16:33 pm
content: Quote from: Ca_s12 on December 03, 2014, 03:48:29 pmAwesome thankss.

author: mtdoc
author_rank: Super Contributor
timestamp: March 05, 2015, 05:52:53 pm
content: Did anyone ever come up with a complete user manual for this DC load?The programming section is not much help to me. I'm having problems accessing some features with the front panel buttons.Thanks.