FS (US) Power Designs 2010, 0-20V 1A Precision DC Source - Page 1
Forum section: electronics / general

author: ivaylo
author_rank: Frequent Contributor
timestamp: August 07, 2022, 07:49:14 pm
content: https://www.ebay.com/itm/175376456068

author: PA0PBZ
author_rank: Super Contributor
timestamp: August 07, 2022, 07:54:55 pm
content: Shipping: US $109.25No thanks

author: ivaylo
author_rank: Frequent Contributor
timestamp: August 07, 2022, 10:59:47 pm
content: I thought that you are going to say that you like the fact that bidding starts at a dollarIf you are seriously looking to buy keep in mind that it's a 110V device (still unique design with a following even in Europe from what I've seen)...Otherwise yes, it's 5 kilos shipped across the world. I did muck with eBay's shipping calculators and I think I managed to set the price to something like $75 to Europe? In any case, I'm not making any money neither from shipping nor from the device, obviously... Just think it deserves to be kept out of the dump...

author: tggzzz
author_rank: Super Contributor
timestamp: August 08, 2022, 07:52:21 am
content: Quote from: ivaylo on August 07, 2022, 10:59:47 pmA few years ago I bought a PD2020for $10, and after shipping to the UK paid ~$80. The 2020modification for 240V was a simply resoldering the traditional transformer primary connections. Shipping is more expensive nowadays.I really like the 2020, but I'm not sure I would bother with a 2010 in the UK.

author: ivaylo
author_rank: Frequent Contributor
timestamp: August 08, 2022, 03:23:36 pm
content: Hmm, haven’t looked into that… Do you mean the transformer already had a primary (tap?) for 240V just not soldered? Does it have enough core for 50Hz?

author: nctnico
author_rank: Super Contributor
timestamp: August 08, 2022, 06:37:12 pm
content: Quote from: PA0PBZ on August 07, 2022, 07:54:55 pmIf the item is worth it... Many years ago I paid $350 for shipping an Ebay item that I got for $60. And for many other things I bought the shipping costs where significant (doubling the total price in some cases). Shipping cost is just part of the price you pay.

author: bdunham7
author_rank: Super Contributor
timestamp: August 08, 2022, 06:53:49 pm
content: Quote from: nctnico on August 08, 2022, 06:37:12 pmFor good stuff I don't mind the shipping costs, within reason. It's the shipping damage that annoys me. I just bought something for a few hundred bucks that I've always wanted and now I have to plan out a 1000-mile round trip journey to pick it up, since I don't trustanyoneto ship it without breaking it.

author: alm
author_rank: Super Contributor
timestamp: August 08, 2022, 07:28:53 pm
content: Quote from: nctnico on August 08, 2022, 06:37:12 pmI agree. Just add up all the costs (price + shipping + import fees), and see if this is worth it for you.Quote from: ivaylo on August 08, 2022, 03:23:36 pmLater models like the 2020B have a dual secondary that can be switched from 115V to 230V. Earlier models like the 2005 don't, but according tothe manualthe transformer is rated for 50 Hz - 440 Hz, so a step-down transformer would work. I can't find a manual or data sheet for the 2010, but based on the writing on the back I'd guess it only has a single primary winding and needs a step-down transformer.

author: Kean
author_rank: Unknown
timestamp: August 08, 2022, 07:34:19 pm
content: I bought a PD 2020B on eBay back in 2014 from the USA for about US$90, and shipping to Australia was about US$80. So the US$75 shipping on this latest listing is (was) not unreasonable IMHO.The problem was that my PSU was not packed very sturdily. While it was well wrapped, the box around the PSU was not padded and got crushed. The PSU must have rattled around during shipping as the nuts holding the transformer came loose, and that caused damage to the fuse holder. Thankfully the internal damage was limited by the wiring looms limiting movement of the transformer. I had planned to open it up to modify from 110V to 240V anyway, so replacing the fuse holder wasn't a big deal and the nuts and washers for the transformer were still inside. One loose foot was found in the wrapping material.As noted by alm while I was typing this, yes it is possible to modify a 2020B to 240V as the transformer has two primary windings that can be wired in parallel or series, but I don't believe that was the case on the 2010 or 2005 models.

author: tggzzz
author_rank: Super Contributor
timestamp: August 08, 2022, 08:33:29 pm
content: Quote from: ivaylo on August 08, 2022, 03:23:36 pmThe bog-standard pair of 120V primaries that can be wired in series or parallel.Definitely check the manual before buying a PD PSU. Some types can be converted, some can't.

author: julianhigginson
author_rank: Frequent Contributor
timestamp: August 09, 2022, 08:13:23 am
content: wow! that looks fantastic... love the design.Wish I'd got it. And I really don't need any more bench supplies.... :-)