DC Regulated Power supply/Bench Power supply - Page 1
Forum section: electronics / testgear

author: JtroTechAB
author_rank: Contributor
timestamp: March 09, 2019, 11:53:03 am
content: Hello,Looking for Reliable & Low cost power supply with following specifications.Voltage: 30V or 32VCurrent: 3A or 5AResolution for voltage should be 0.01V1,2 or 3 channels.Kindly suggest models with keeping in mind above criterias.While searching I came across UTP3305 & UTP1305 by UNI-Tany feedbacks about these two models. Because I didnt find any feedbacks in depths.

author: ElectronicCat
author_rank: Regular Contributor
timestamp: March 09, 2019, 12:28:00 pm
content: No experience with UNI-T power supplies but I wouldn't recommend them for serious work. In that sort of price range though I'd definitely look into Aim-TTI supplies, they're a decent compromise between cost and quality. Something like the EL303R at the low end should be fine.

author: nctnico
author_rank: Super Contributor
timestamp: March 09, 2019, 01:29:43 pm
content: Those UNI-T power supplies look familiar. I think they are rebadges.

author: JtroTechAB
author_rank: Contributor
timestamp: March 11, 2019, 04:14:14 am
content: Quote from: nctnico on March 09, 2019, 01:29:43 pmSo, any other original models?

author: JtroTechAB
author_rank: Contributor
timestamp: March 11, 2019, 04:37:44 am
content: Quote from: ElectronicCat on March 09, 2019, 12:28:00 pmagain, what about the reliability, I dont find any reviews or feedbacks. Can you provide any source for reviews?Also how to check whether they are rebadged as in the case of many power supplies.

author: DaJMasta
author_rank: Super Contributor
timestamp: March 11, 2019, 04:42:09 am
content: Easiest check for rebadges is to look for comparable products and see if they look the same - would take a full on review/teardown to really verify.Some of the Siglent triple channel models are approximately in that ballpark, sometimes either Siglent or Rigol's regional sites offer clearance units (usually demo units being retired) for pretty good prices too, but you'd probably have to check every so often for a while, stock isn't high and is very variable.This kind of requirement has been discussed a lot, use the search (icon up top, not the built in search bar) to have a look at what's been recommended recently.

author: Inverted18650
author_rank: Frequent Contributor
timestamp: March 11, 2019, 04:53:40 am
content: I have no experience with the Uni-T units but wonder if the 3305 is kinda of the price range you are after. Here's some nice used gear from sellers I trust.edit* ALSO do you mind if it is switching or does it need to be linear?here is an example: it has 2 adjustable 30V-5A and a fixed 5V output. I do not know if the channels are independent/floating but a quick google search would tell you that.https://www.ebay.com/itm/Mastech-HY3005F-3-DC-Power-Supply-Triple-Output-0-30V-5A-LED-Display/123655989397?epid=1301725895&hash=item1cca78a895%3Ag%3AxgAAAOSwBRlcbXNd&LH_ItemCondition=4&frcectupt=true

author: JtroTechAB
author_rank: Contributor
timestamp: March 11, 2019, 12:57:16 pm
content: During my search, I came across GPE-2323 & GPE-3323 by GW-Instekthey both fit in my criteria.Have any one used these models, any feedbacks, reviews supported with video in order to understand how its actually functioning.Also, in GPE-3323 model want to know whether the third output 5V/1A is fixed or adjustable?because on model they have shown 0-5V but in datasheet they have shown 5V only.

author: colorado.rob
author_rank: Frequent Contributor
timestamp: March 11, 2019, 03:25:18 pm
content: Quote from: Inverted18650 on March 11, 2019, 04:53:40 amThose "3005" power supplies have absolutely no EMC protection. If you deal with RF at all, avoid these units. EM interference can cause changes to the output voltage and current limits. They will fry your DUTs. These cheap linear power supplies are re-badged under many different brand names.I'll have to do a video at some point...

author: windsmurf
author_rank: Frequent Contributor
timestamp: March 12, 2019, 01:38:29 am
content: Quote from: JtroTechAB on March 09, 2019, 11:53:03 amNeither of the Uni-T's meet your resolution requirement, as resolution on those units are 0.1V.

author: JtroTechAB
author_rank: Contributor
timestamp: March 12, 2019, 04:08:18 am
content: Any reviews for these GW-Instek models? (GPE-2323 & GPE-3323)what about the third output in GPE-3323 is it fixed or adjustable?