Selling a Chroma DC Electronic Load Mainframe, eBay next week. - Page 1
Forum section: electronics / general

author: rx8pilot
author_rank: Super Contributor
timestamp: October 07, 2015, 01:15:34 am
content: I bought I couple of Chroma 6314 DC Load Mainframes with modules. The plan is to configure just one the way I want it and rest will go up for sale again. If anyone here on the EEVBlog wants it first, I will not put it on eBay. USA/Canada only please. The challenge and expense of international shipping is probably not worth it on this one. It's fairly big and heavy.It will be listed on eBay next week starting at $1,200 for a 6314 Mainframe which is a 4 module controller with GPIB and (2) Two 63102 Dual 100W loads. This means you get 4 channels of 100 watt electronic loads with room for four more in the chassis. Chroma makes a rather wide range of modules that regularly come up on eBay.For those into power electronics - batteries, chargers, SMPTS, etc....these things are fantastic. 4 integrated channels for $1,200 is a good deal. If it makes it to eBay it will most likely get more.For data sheets.....http://www.chromausa.com/product/modular-dc-electronic-load-6310a/I will post pics once I get the unit to be sold configured.

author: rx8pilot
author_rank: Super Contributor
timestamp: December 05, 2015, 09:34:02 pm
content: Some pics. This is still for sale.4 channels of DC high-end DC load. Chassis room for more.....Currently listed on eBay for $1250US or make offer.

author: nctnico
author_rank: Super Contributor
timestamp: December 06, 2015, 09:48:31 am
content: From a price/value perspective a 400W DC load for $1200 doesn't seem to be a very good deal. Just poking to try and help: What is special about these DC loads which makes them worth $1200?BTW: I was hoping you had a >1kW unit for sale.

author: rx8pilot
author_rank: Super Contributor
timestamp: December 07, 2015, 04:26:19 am
content: The new price is close to $5k for the chassis and the two modules.This is a high-end professional instrument. If you are comparing this to an eBay special like Atten/Circuit Specialists/whatever other names, nothing looks like a good deal.4 Independent high-resolution 16bit fast 100w DC loads. Remote sense, reverse polarity protection, OV protection, programmable slew rate. All grouped into a single control chassis with GPIB.These high-res lower power units are great for SMPS design which is what I use them for, low noise high speed. Others use them for battery pack validation and testing. You get a reliable 5.5 digits out of the GPIB. The chassis, of course is very flexible. I have a couple of the higher power modules that I can swap in for testing big batteries. They can be put in parallel as well.Check out this BK gem - $1600+ just for the frame alone. Chroma, IMHO is a better built system.http://www.ebay.com/itm/BK-Precision-MDL001-Programmable-DC-Electronic-Load-Mainframe-/191733625744?hash=item2ca436f390:g:UIkAAOSwEetV8IIFThese horrible (I owned one) units are $1400 for four channels with no control, remote sense, cheap quality. I was so happy to see mine go.http://www.ebay.com/itm/Tekpower-TP3710A-Programmable-DC-Electronic-Load-150-Watts-/161368849148?hash=item2592553afc:g:gLMAAMXQhpdRw3qn5ch higher power Chorma $4100http://www.ebay.com/itm/Chroma-6334-DC-Electronic-Load-Mainframe-w-Options-3X-63303-63302-/311483678803?hash=item4885dfc053:g:0UgAAOSwLzdWQ8O12ch high-power Chroma $3900http://www.ebay.com/itm/Chroma-6334-DC-Electronic-Load-Mainframe-w-63306-600W-2X-63303-300W-Modules-/311483695561?hash=item4885e001c9:g:BHIAAOSwlV9WQ8wv4ch Chroma $2359 - probably the best deal on the working units available.http://www.ebay.com/itm/CHROMA-6314-DC-ELECTRONIC-LOAD-WITH-4-x-63103-module-/310975602262?hash=item4867971e56:g:uqUAAOxyrrpTjSYI2ch Chroma $799 - but functionality unkownhttp://www.ebay.com/itm/Chroma-ATE-Inc-6334-High-Speed-DC-Load-Mainframe-w-2x-63303-DC-Load-Modules-/391333324368?hash=item5b1d48a650:g:ocgAAOSwcdBWT6QyThere are some "For Parts/Not Working" listings for less for the DIY buyers. Never know how those will go. For a pro user/buyer this is about a cheap as you will find for this configuration of chassis based system DC loads.

author: PlainName
author_rank: Super Contributor
timestamp: December 07, 2015, 08:00:59 am
content: QuoteListed as used and no faults admitted, so you can assume it is fully functional. The beauty of Ebay classification, eh

author: rx8pilot
author_rank: Super Contributor
timestamp: December 07, 2015, 07:53:23 pm
content: Yep, you never really know. I have had reasonable luck on eBay but every purchase has me crossing my fingers.Sent from my SAMSUNG-SM-G890A using Tapatalk

author: rx8pilot
author_rank: Super Contributor
timestamp: August 02, 2016, 02:43:28 am
content: This puppy is still for sale - PRICE LOWERED.$1000 for Four channels of DC Load. Somebody get it! I have too many of these.

author: TiN
author_rank: Super Contributor
timestamp: August 04, 2016, 01:22:36 pm
content: nctnicoThese can go to max current with lower compliance voltage than most of cheapo DC loads. I use newer 6314A from time to time at lab, always loads properly even with <1V outputs.I tore 63103A module during service before, fewpics here. Not sure if older 6314 supports newer modules, but it's decent box if you have space on bench.