Uni-T power supplies

[grey_rabbit_25]

Hi,

I'm a beginner hobbyist with electronics, and i've been thinking about getting a desktop power supply.

I've come across the following Uni-T power supplies, and wondering if anyone had any thoughts/comments

http://www.mektronics.com.au/uni-t-utp3704-dc-power-supply.html

http://www.mektronics.com.au/uni-t-utp3704-dc-power-supply-19396.html

I've done a search and couldn't find much info (the one in the first link doesnt even appear on the company's website).

It appears to me that the one in the second link is better specced, despite being cheaper.


Thanks.

[mmagin]

The first one is definitely a rebranded GW Instek

[valentinc]

    From what I can see the second one has a better load regulation, but it's not very clear what is the spec for the first one (CV-20mV). They are good for the price. Also note there are others like them out there" GW Instek, like mmagin said, Siglent, you can search on ebay "0-30V power supply" and see what you find.

    http://www.siglent.eu/spd3303c-0-30v-0-3amp.html Also this one is digitally controlled, for a similar price, but without that constant 5V output (if you don't need that, you can also consider this one)

[Kleinstein]

The weight is suspicious: to heavy for a switched mode version and to light for a classical transformer. So maybe "Chinese" amps - a underrated transformer and thus the low MTBF.

The Instek / Sigilent are nearly twice the weight.

[Fraser]

UNI-T Power Supply units are made by a third party who also makes their Function Generators.

Having owned one of the function generators and spoken to a UK retailer of them, I would not touch the PSU's or Function Generators. The retailer ceased selling them due to very high failure rates and customer dissatisfaction with performance. That is what he told me anyway. The retailer claimed that the build quality was very poor when compared to the UNI-T portable multimeters and DSO's. He continued to sell those as they offered good value fro money with low failure rates. The bench multimeters are also suspected of being built by a third party. I had a couple of those as well.....junk.

This is indirect feedback from a retailer so consider it unconfirmed. I can state that the UNI-T Function Generator was a turd though. Very poor build and performance. Nothing like the quality of the handheld multimeters that I have.

Be aware that many pieces of equipment mimic the competitions cases so just because the case looks the same, it does not men the contents are the same or good quality.

Fraser