Products > Test Equipment

ARRAY electronic loads

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saturation:
Its hard to believe my unit is over 1 year old now, an Array 3710a rebadged as a Tekpower brand.  I use it a lot and its saved me a lot of time, grief and burned fingers.

I've definitely put it through its paces, often burning at full 200W nearly a day, and the thing never gets hot.  The hardware is very well made for what it does and the LCD screen is accurate as displayed; I've checked it many times with DMMs as backup for V and A readouts.

The software is poor but functional.

Even if you buy direct from China via Taobao.com the Array 3710/1 is typically ~ half - 1/3rd the price of the Maynuo.  The build quality of the Maynuo makes me feel uncomfortable but no one has reported failures here; and the software for Maynuo and clones are superior, and has far more functions.  You may find the Array 3370/1a sold locally to your country from someone as a rebadged unit so there is less uncertainty buying it Internationally; if Gossen Metrawatt is will to put its name on the Array, it says something for their build quality.

https://www.gossenmetrawatt.com/english/produkte/ssl150300.htm



saturation:
FWIW, quite a number of Maynuo variants are available from Amazon.com and some sellers ship from USA locally.

linux-works:
for interest (and because I took a photo for someone), here is my array box doing a load test of a psu:



that array was $700 (sigh).  I paid extra for the gpib interface and also to get it from a US seller with a US warranty (in texas, I think that's still the US, lol).

it does not go up as high in voltage as I'd want (the Array) but its built pretty well, has a good UI, has ascii SCPI for remote mgmt and uses a simple and easy to get lcd display, so nothing custom or fancy here.  rotary wheel is nice and clicky and the front button arrangement is tasteful.  I like this box ;)

DaGlitch:
Just got a 3721A and was wondering if anyones unit sounds like mine. I can hear the fan just fine, but this sounds like something else. I didn't see any mention of the noise anywhere (or expected it) so I thought I would ask to see if this was normal. Cheers!

sacherjj:

--- Quote from: DaGlitch on September 23, 2014, 05:17:46 am ---Just got a 3721A and was wondering if anyones unit sounds like mine. I can hear the fan just fine, but this sounds like something else. I didn't see any mention of the noise anywhere (or expected it) so I thought I would ask to see if this was normal. Cheers!


--- End quote ---

That sounds like maybe a fans running while rubbing on something.  The 3710 has two stages of fans, but they come on full, half, off cycle when powering.  So it doesn't seems like the sustained sound would be there if it was the fan.  Unless the control circuitry is messed up.

Although the insides of the 3710 and 3721 might be completely different.

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