FS: New-In-Box 'B&K Precision' PSU (3-15V 40A) (UK Seller - Please Read Details) - Page 1
Forum section: electronics / general

author: BackFire
author_rank: Newbie
timestamp: May 10, 2025, 09:48:15 am
content: PLEASE READ BELOW BEFORE DM'ing:!!- PRICE DROPPED -!!I am based in the UK, which is where this item would be sent from.!!- THE EXACT ITEM BEING SOLD IS THE120VAC INPUTMODEL -!!Hence why I've decided to sell this in a more 'global' forum, (I have attempted to sell this on eBay on numerous occasions but even enabling 'global listing' options, didn't seem to generate much interest).The PSU hasnever been out of the boxit is exactly as DigiKey shipped it to me a few years ago. The item has been stored properly, in a domestic environment and not subjected to any major temperature swings/humidity issues or otherwise.I am happy to ship to almost any country, as long as payment is received ahead of shipment. The only form of payment I will accept is the "Paying for an item or Service" option within PayPal. The current retail price of this PSU (on DigiKey) is ~£460.00 inclusive of VAT in the UK, which is (at time of writing) ~$600.00 (USD).I want to sell this PSU for~£200.00(~$275.00 (USD))If you're interested, please DM me so we can discuss shipment details and payment.Some more details on the product, pulled from DigiKey:Description: "3 ~ 15VDC Output Bench (AC to DC) Power Supply LED 40A Output Features Adjustable or Fixed Selection Switch"Manufacturer: B&K PrecisionModel Number: 1692Type: Bench (AC to DC)Voltage - Supply: 120VACNumber of Outputs: 1Voltage - Output: 3 ~ 15VDCCurrent - Output: 40AVoltage Regulation - Line: ~80mVVoltage Regulation - Load: ~230mVRipple: 10mV rmsDisplay Type: 2 x 3-Character LED 7-SegmentSize / Dimensions: 11.820" L x 4.330" W x 8.670" H (300.23mm x 109.98mm x 220.22mm)Weight: 7.7 lbs (3.5 kg)DigiKey Listing:https://www.digikey.co.uk/en/products/detail/b-k-precision/1692/1682100

author: KungFuJosh
author_rank: Super Contributor
timestamp: May 11, 2025, 03:26:13 am
content: Are you selling it because of the line voltage?If so, have you checked the transformer wiring internally? Sometimes, it's just a quick fix depending on what they used.

author: bdunham7
author_rank: Super Contributor
timestamp: May 11, 2025, 04:31:33 am
content: Quote from: KungFuJosh on May 11, 2025, 03:26:13 amIt's an SMPS. IDK whether it would be user selectable or even modifiable. Non-PFC SMPS are often switchable or modifiable by changing the rectifier configuration from a full-wave-bridge to a full-wave-doubler and PFC SMPS can just adapt on their own. But to make that work you have to spend a tiny bit more on the original product and with high power supplies it may work better to just have two versions despite the attraction of having just one SKU vs 2. The fact that they state you need to order a separate part number when you order it makes me suspect they have some way of reconfiguring it at the warehouse here in CA.

author: bdunham7
author_rank: Super Contributor
timestamp: May 11, 2025, 04:34:11 am
content: Quote from: BackFire on May 10, 2025, 09:48:15 amJust FYI this exact unit is widely available in the US for a bit over $400 (MSRP $503) and I can actually buy it right now for about $320 including tax and shipping. So if you are hoping for a US sale I think it is unlikely. IDK what the tariff situation is at the moment...

author: BackFire
author_rank: Newbie
timestamp: May 11, 2025, 10:39:34 am
content: It's simply not required in my work-space set-up is my major reason for selling, though as you've probably determined; It was an incorrectly placed order from an input-voltage spec.

author: BackFire
author_rank: Newbie
timestamp: May 11, 2025, 10:41:48 am
content: B&K Precision actually do sell a 240Vac input unit with a similar SKU, I'd imagine the only part in the whole device that actually changes is the input-stage transformer and the power cable they throw in the box! As I've commented above, the main reason for selling is simply that I don't require this PSU, so if someone else can have it 'untouched' and usable, it seems like the best plan.

author: BackFire
author_rank: Newbie
timestamp: May 11, 2025, 10:45:25 am
content: Thanks for the response regarding sale price, it's great to have a 'US' actual value. Price in OP adjusted accordingly - Will now be happy with ~$275.00 (USD).

author: factory
author_rank: Super Contributor
timestamp: May 11, 2025, 10:54:40 am
content: I doubt it can be changed to 230V, the picture in this thread doesn't show anything/connections to change line voltage;https://www.eevblog.com/forum/repair/sps-9400mp3090bk-1692-15v-40a-power-supply-repair/msg4794965/#msg4794965Also Dave's video of an older version even has circuit diagrams, that confirm it can only accept one AC line voltage.I'm sure that international shipping costs/import fees on feeBay would have put off any overseas buyers, I buy a lot of vintage test gear from the USA, it isn't cheap to send stuff, parcel volume/size cost can exceed weight for shipping.David