Riden RD6018 efficiency - Page 1
Forum section: electronics / testgear

author: vladant
author_rank: Newbie
timestamp: July 09, 2021, 09:41:51 am
content: I have just tested RD6018. Load 5V 0.5A - input 60V, 0.2A. So taking into account that the unit draw some current without load I came up with ~30% efficiency... WTF? Are you kidding me !?

author: HKJ
author_rank: Super Contributor
timestamp: July 09, 2021, 11:07:25 am
content: Quote from: vladant on July 09, 2021, 09:41:51 amThe power supply need to use some power for the display and internal electronic, try measuring its power consumption without any load on and subtract it from you result.

author: Cymaphore
author_rank: Regular Contributor
timestamp: July 09, 2021, 11:21:06 am
content: It is a 1kW rated buck converter. It has to be able to deliver the power "immediately", it's a lab supply. You'll not get full range efficiency for such a low price. They basically don't have to meet any product standards at all. It's from Shenzen, know what to expect.If you only work with that amount of power, rather use a supply that is less overpowered.

author: SteveyG
author_rank: Unknown
timestamp: July 10, 2021, 03:54:55 pm
content: As you draw more power, the efficiency goes up. At such a low power level, any efficiency measurements are swamped by the quiescent draw of things like the TFT, backlight, processor etc. Nothing to do with it being from Shenzhen at all

author: UniSoft
author_rank: Frequent Contributor
timestamp: July 11, 2021, 01:15:18 pm
content: Quote from: Cymaphore on July 09, 2021, 11:21:06 amfrom HangzhouI am working in Shenzhen

author: Cymaphore
author_rank: Regular Contributor
timestamp: July 11, 2021, 08:49:51 pm
content: Quote from: UniSoft on July 11, 2021, 01:15:18 pmSorry for mixing the locations up.The RD6018 is a good supply, I own one myself. But it's clearly a hobby device designed to be cheap. Electrically, documentation and in terms of efficiency, standard compliance and probably even durability it doesn't stand a chance against the supplies of similar power ratings I have available at work. But it's cheap. That's typical for products on banggood, aliexpress, etc. Since many of them come from the area around Shenzen, it became a bit synonymous to me. Probably not correct, sorry for that. But don't get me wrong, it's not nessasarily a bad thing. You just have to know what to expect. Unless you actually believe a "CAT IV 1000V" claim on a 20€ meter and rip your hands off.Quote from: SteveyG on July 10, 2021, 03:54:55 pmIt's built to a price. With hobby applications in mind. Not to be able to actually compete against something like a genesys+ or ps9k.Vendors that have to comply with product standards (and proof compliance by independent testing) will deliver different products then companies shipping to overseas who don't even provide a complete manual that matches the product. And RD-Tech is actually one of the good guys, as far as I can tell. There is so much shit out there. So many dangerous products. So many plain lies.Look at the power supplies and other products available on banggod, aliexpress and so on. And tell me that you believe the specs and that they can be compared to the products they try to mimic. It's not nessasarly bad. But you have to know what can be expected and what not.