Is this Sorensen power supply the model for all those out there  ? - Page 1
Forum section: electronics / beginners

author: Back2Volts
author_rank: Unknown
timestamp: June 30, 2017, 10:26:42 pm
content: I just run into this post. I wonder if the MASTECHs and the likes are related in some way.http://www.ebay.com/itm/SORENSEN-LT-30-3-LABORATORY-DC-POWER-SUPPLY-MODEL-LT-30-3-CC-/401343575067?hash=item5d71f0f41b:g:P1YAAOSwvflZOXVEI thought SORENSEN made quality products. Was this a case of bad cloning of a good product ?

author: slurry
author_rank: Regular Contributor
timestamp: June 30, 2017, 10:33:15 pm
content: Sorensen is the ducks guts, the cats pyamas so this is surprising,no, i'm not sure about this, if they rebranded a TTi it would be somewhat ok but not some chinese low-grade PSU's...?but, again, many manufacturers get their own "low-cost" or "value"-line of products, Elektro-automatik is one example of high quality manufacturer that went with lowered quality in some "value"-series.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 01, 2017, 06:21:52 pm
content: I've used one of those before, except analog meter movements. It's linear and does what it says. Nothing remarkable. Didn't test for anything, just used it.I think the button style is either coincidence, or Chinese copying this one. Note that the face plate and enclosure are slightly different. The fact that they all use LED displays is merely standard for decades.If you can find older Sorensen catalogs, you might be able to find when it was introduced. I suspect it predates the Chinese clones.The possibility of cheap product lines is also open, as slurry said.Tim

author: eKretz
author_rank: Frequent Contributor
timestamp: July 01, 2017, 08:27:19 pm
content: The clones never use the same quality parts as the originals. They use cheap shite components and often even change the circuits to cheaper versions. I can vouch for the quality of original Sorensen gear, they're fantastic. I own several and have never had a single hiccup out of them.

author: ElektroQuark
author_rank: Unknown
timestamp: July 02, 2017, 09:06:02 am
content: From 1997:CLICK!

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 02, 2017, 01:40:52 pm
content: Oh, nice find. That probably predates the explosion of clones (clonesplosion?). At least, of those sold over the internet...Tim

author: Back2Volts
author_rank: Unknown
timestamp: July 04, 2017, 02:43:27 am
content: Quote from: EdoNork on July 02, 2017, 09:06:02 amGood find. It is most likely a quality supply.Tony

author: ManuelMcLure
author_rank: Contributor
timestamp: July 10, 2017, 06:47:25 pm
content: It looks like Tektronix used the same case/front panel on their PS283 power supply, although that one does only 1A on the 30V supplies. Those were 1991 vintage according to the user manuals:http://www.tek.com/ps280-manual/ps280-ps283-user-manual

author: alm
author_rank: Super Contributor
timestamp: July 10, 2017, 07:20:06 pm
content: Pretty sure the Tektronix cheap bench instruments instroduced in the early nineties were designed and produced in Taiwan by an OEM under the Tektronix name. That they were discontinued just a couple of years later. The OEM might have been GW-Instek or Escort. Not exactly a good counter-example of cheap rebranded units.

author: The Soulman
author_rank: Super Contributor
timestamp: July 10, 2017, 07:29:25 pm
content: Quote from: alm on July 10, 2017, 07:20:06 pmHowever these do look rather much identical to the Sorensen posted above, maybe Sorensen did buy from the same OEM?

author: alm
author_rank: Super Contributor
timestamp: July 10, 2017, 07:40:18 pm
content: The one in the eBay auction says made in Malaysia, so it does not appear to be made by the same company.