ITECH IT6302 power supply - any teardowns/reviews? - Page 1
Forum section: electronics / testgear

author: toli
author_rank: Frequent Contributor
timestamp: August 17, 2018, 01:42:32 pm
content: I've stumbled upon this power supply yesterday while browsing for something quite different. At first it looked quite similar to the layout of my BK precision 8500 electronic load - so I started looking for more info and seems like it is indeed the same device as on of BK's power supplies. I assume that just like the 8500, it is the OEM manufacturer for the instrument sold by BK.Then, while I wasn't looking for a new power supply, the IT6302 seemed quite interesting. The main advantage for me is the small form factor, the 1mV/1mA reading resolution, combined with the low price. I've seen it on AliExpress for ~330$ shipped. However, looking for some teardown/review showed up with no results.Spec wise it seems ok. The voltage/current values are on par with my current PS's (older "Sun-Rise" re-branded units), and is more than sufficient for most of my needs. However, the ripple/noise isn't too great at ~1mVrms, and a few mArms.Has anyone purchased one of these and could share his opinion on the unit (inside picture are also welcome). I'd really like to know how it compares with other low cost power supplies, such as the DP832 from Rigol which seems like a low cost favorite.

author: MikeP
author_rank: Regular Contributor
timestamp: August 18, 2018, 06:28:42 am
content: Hello toli.This PS hasn't 1mV/1mA reading resolution. See DS.http://www.itech.sh/Upload/File/20171023145720.pdfI have Keithley 2231. In general they are the same. VERY noisy (fan). Has low accuracy for small values. Not the best soldering. In the rest everything corresponds to the price and specifications.

author: toli
author_rank: Frequent Contributor
timestamp: August 18, 2018, 07:07:12 am
content: You are correct, its 10mV/1mA, seems like the more relevant of the two is indeed 1mA.If anyone has one of these and could share teardown photos I think it would be interesting nonetheless.

author: insine
author_rank: Contributor
timestamp: August 18, 2018, 10:44:20 pm
content: Here is a teardown of Keithley 2231A-30-3 which is identical to IT6302, except front panel design:You can also find a teardown of IT6322 (higher model with better accuracy and voltage resolution). The main PCB seems to be exactly the same:

author: toli
author_rank: Frequent Contributor
timestamp: August 19, 2018, 08:00:13 am
content: Thank you for the links. I didn't realize that the Keithley was the exact same instrument. I was under the impression that BK are the only company that sells this item under their name. Especially since the front panel seems somewhat different on the Keithley.If both BK and Keithley are selling this item with their name on the front, this definitely gives ITech a few point in their favor.

author: lukasz.kostka
author_rank: Contributor
timestamp: June 13, 2019, 03:18:58 pm
content: I've disassembled mine. Pics below.

author: colorado.rob
author_rank: Frequent Contributor
timestamp: June 13, 2019, 07:46:49 pm
content: I'd have a hard time going back to a power supply I could not control over the network. I design embedded systems and use network control when testing new firmware more than I expected. For that reason alone the Rigol DP832 would be my choice in this price range. (But note: getting LXI does require hacking the 832 unless you pay for the 832A.)

author: lukasz.kostka
author_rank: Contributor
timestamp: June 13, 2019, 07:51:57 pm
content: No problem with Itech. I've bought a TTL separator and all works fine through serial.

author: PedroDaGr8
author_rank: Super Contributor
timestamp: June 14, 2019, 06:50:50 pm
content: Quote from: toli on August 17, 2018, 01:42:32 pmITech is actually a fully-owned subsidiary of BK Precision (https://www.bkprecision.com/about-us.html). As far as anyone knows, the BK PRecision Loads and 91xx series power supplies are the exact same as the ITech equivalents, just intended for different markets. From my understanding, these were designed and built by ITech (from which a lead engineer left and founded Array and Maynuo).

author: rsjsouza
author_rank: Super Contributor
timestamp: June 15, 2019, 01:04:34 am
content: Despite the transformer has a typo on the label ("vender"), I love how they labeled all the transformer taps.It looks quite a decent supply.