Rigol DP832 vs BK Precision LPS305B-TC (plus one question about Rigol)

• Rigol DP832 vs BK Precision LPS305B-TC (plus one question about Rigol)
  Posted by IAmBack on 26 Jan, 2017 12:53
• Hello.
  
  I have to make decision between those two. I've seen a lot information about Rigol, but almost nothing about BK. To be honest, some info about Rigol are discouraging. What's more, BK is much cheaper...
  
  What are general opinions about BK psu? Is it reliable? What bugs does it have? If You have both, which is better for typical use (just as a regular psu).
  
  And the question about Rigol: does OCP acts as "electronic fuse" (like in eg. Hameg), turning off the overloaded output? If so, how fast it acts? I know, that BK does not have "electronic fuse", and if Rigol has, it will "sell" DP832 to me.
  
  Thanks in advance.
  
  Martin.
  
  
• #1 Reply
  Posted by RoGeorge on 26 Jan, 2017 13:21
• If OCP is turned on and the current exceeds the value set for the OCP, then the DP832 will turn off that channel, and display the message "CHn overcurrent protection, disabled the output of CHn."
  
  The channel that triggered the protection will remain off.
• #2 Reply
  Posted by IAmBack on 26 Jan, 2017 13:41
• Thank You for the info.
• #3 Reply
  Posted by thm_w on 26 Jan, 2017 22:06
• OCP is listed as <10ms in the manual to activate. If its a small load the output capacitance will still have some effect on shutoff time (I think its few hundred uF?).
  
  BK is a switching supply and a bit noisier, slightly lower accuracy, but is more efficient and smaller. Display on rigol is way nicer than the BK.
• #4 Reply
  Posted by IAmBack on 27 Jan, 2017 12:37
• Thank You. I was sure that BK is linear psu...
  What about reliability? Rigol stories are little terrifying. Is this only the matter of number of samples?
  On the other hand, BK looks very much like Keithley. Is it only "coincidence", or Keithley is rebranded BK? If so, things with BK looks more promising than with Rigol.
• #5 Reply
  Posted by mcinque on 27 Jan, 2017 13:04
• Quote

  What about reliability? Rigol stories are little terrifying.

  You are considering only stories from unsatisfied customers.
  Happy customers don't spend time whining on the forum.
  DP832 is a PSU who had issues in some batch. You must deal with it. In any case, you CAN'T find a PSU with that specs at that price.
  
  

  Quote

  On the other hand, BK looks very much like Keithley. Is it only "coincidence", or Keithley is rebranded BK?

  BK rebrands 99% of its products, and it's not cheaper than the rebranded (take the "genuine").
  
  
• #6 Reply
  Posted by thn788 on 27 Jan, 2017 13:59
• Ok, let a happy customer spend a few seconds whining on the forum... 
  
  I bought a DP832 for personal use a few years ago and was happy enough with it to recommend it in the company where I am working. By now we have bought about 10 DP832 and DP832A PSUs, often to replace (fully working) Agilent E3649 units, because of the better features and specs of the Rigols.
  
  And we haven't had any single issue with any of the Rigols, so far.
• #7 Reply
  Posted by IAmBack on 28 Jan, 2017 19:14
• Thanks to all of You. It is most probable that I'll go with Rigol.