Power Supply feedback

Go To Last Post
8 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi All,

 

I have had this supply in my cart for a long time, it is on a lightning deal with a fair discount, but I wanted to get the group's opinion before getting one.

 

https://www.amazon.com/dp/B00962...

 

Thanks for any and all input!

 

r/Steve

  • "Give me six hours to chop down a tree and I will spend the first four sharpening the axe."  -- Abraham Lincoln
  • "All right wise guy, where am I?"   -- Daffy Duck
  • "Well, we're safe for now. Thank goodness we're in a bowling alley."  -- Big Bob, Pleasantville
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Amazon has had a history of posting never used artificially high retail prices, then discounting those prices to make you think you're getting a great deal. Look for the exact same supply else where and compare.

There is a similar supply on the page I viewed that has a variable 0-5v supply instead of a fixed 5v for lower voltage digital devices that would be better. The picture shown for it is the wrong pic however. some of their supplies have banana jacks instead of real 5 way banana jack binding posts. These appear to be variations of the HY series power supplies. Look at other sources and reviews for comparison, read carefully, and make sure the picture matches the description. The variable 0-5 output supply does NOT match the text.

 

Rick

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

RickB wrote:
Amazon has had a history of posting...

Note that not everything on Amazon is by Amazon - so be careful who you blame ...

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

RickB wrote:
Amazon has had a history of posting never used artificially high retail prices, then discounting those prices to make you think you're getting a great deal. Look for the exact same supply else where and compare.

 

Except 3A on the dual 30V.

http://www.mpja.com/Variable-Dual-0-30V-3A-and-Fixed-5V-3A-Benchtop-Supply/productinfo/29623+PS/

Last Edited: Sun. Jan 22, 2017 - 04:00 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

sbennett wrote:

RickB wrote:
Amazon has had a history of posting never used artificially high retail prices, then discounting those prices to make you think you're getting a great deal. Look for the exact same supply else where and compare.

 

http://www.mpja.com/Variable-Dual-0-30V-3A-and-Fixed-5V-3A-Benchtop-Supply/productinfo/29623+PS/

 

Gotta love MPJA!!

 

JIm

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

 

Note that not everything on Amazon is by Amazon - so be careful who you blame ...

Sellers play follow the leader.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I wonder if it has coarse and fine adjustments like my old single supply one has.  Maybe this one has multiturn pots.

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Do you need to have constant-current sourcing and current-limiting? At 1 amp to 5 amp levels?  If not then you can use an AC wall-wart 15-20VAC, a bridge rectifier,  a 1000uF filter cap, and an adjustable switching-power IC module board ($1-$3 on eBay) to meet your bench needs.  At a cost of 1/20th of the lab-equipment pieces.