Is this Sorensen power supply the model for all those out there ?

• Is this Sorensen power supply the model for all those out there ?
  Posted by Back2Volts on 30 Jun, 2017 22:26
• 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:P1YAAOSwvflZOXVE 
  
  I thought SORENSEN made quality products.    Was this a case of bad cloning of a good product ?
• #1 Reply
  Posted by slurry on 30 Jun, 2017 22:33
• 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.
• #2 Reply
  Posted by T3sl4co1l on 01 Jul, 2017 18:21
• 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
• #3 Reply
  Posted by eKretz on 01 Jul, 2017 20:27
• 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.
• #4 Reply
  Posted by ElektroQuark on 02 Jul, 2017 09:06
• From 1997: CLICK!
• #5 Reply
  Posted by T3sl4co1l on 02 Jul, 2017 13:40
• Oh, nice find.  That probably predates the explosion of clones (clonesplosion?).  At least, of those sold over the internet...
  
  Tim
• #6 Reply
  Posted by Back2Volts on 04 Jul, 2017 02:43
• Quote from: EdoNork on 02 Jul, 2017 09:06

  From 1997: CLICK!
  

  
  Good find.   It is most likely a quality supply.
  
  Tony
• #7 Reply
  Posted by ManuelMcLure on 10 Jul, 2017 18:47
• 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
• #8 Reply
  Posted by alm on 10 Jul, 2017 19:20
• 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 .
• #9 Reply
  Posted by The Soulman on 10 Jul, 2017 19:29
• Quote from: alm on 10 Jul, 2017 19:20

  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 .
  

  
  However these do look rather much identical to the Sorensen posted above, maybe Sorensen did buy from the same OEM? 
• #10 Reply
  Posted by alm on 10 Jul, 2017 19:40
• The one in the eBay auction says made in Malaysia, so it does not appear to be made by the same company.