Cheap bench psu - Page 1
Forum section: electronics / general

author: masterx81
author_rank: Frequent Contributor
timestamp: February 02, 2020, 12:55:53 am
content: Hi! I'm tring to figure out what's the best dirty cheap psu for replace my old atx modded psu.I was searching something digital and programmable. The units that i was checking are the korad 3005p/6005p/3305p or the rd6006 (maybe with linear psu).I've read here a lot about them, and seen the reviews, but i'm not totally sure what would be the best choice features/reliability/ripple/precision. The price will be comparable. The rd unit has the nice keypad, the korad seem quite strong (excluding the unit failed in the review...)Or any other alternative in that (sooooo low) price range?Thanks!Edit:Tipology: Linear vs smps (smps linear or smps before the buck). Both good for me, like the better efficiency (less heat) of the smps but like also the no stability of linear...Functions: the rd6006 has more functionsStability: korad as linear have no ripple and maybe better response on varying load. For my use i not care of some ripple, but as more precise is betterReliability:In case of fault what is more safe? Strange overshot, etc? What's more reliable on the long term?Voltage: the rd6006 goes up up 60v, 2 in series 120v. 2 konrad 6005 are a bit out of budget. A 3305 (or 2 3005) i get 60v (that for me will be enough)Current: 2x 6006 12a, 3305 (or 2x 3005) are almost the same. For me both are ok, but i've read that 3305 are a bit limited at full power.

author: sn4k3
author_rank: Frequent Contributor
timestamp: February 02, 2020, 07:34:39 pm
content: Giving your information my vote goes to RD6006. If you are not working with very sensitive components that PSU is very good for it price.I have RD6006 and SPD1305X with almost no ripple, and i end using RD6006 most of the times because it ease of use, the recall and ui of SPD make me sick.If you opt for RD6006, make sure to buy the complete unit with proper PSU

author: masterx81
author_rank: Frequent Contributor
timestamp: February 02, 2020, 08:46:51 pm
content: Hi! thanks for the reply!The use of the supply is for hobby/diy purposes. I can connect almost anything to it. From an engine ecu, to various boards. worst case will be a shorted component, that requires the psu to work in constant current at 100~1000ma and really low voltage. By now for fear of some nasty current regulation of my modded atx psu i set it in costant voltage then put a lot of resistors in series for limit the current.. would be nice to do it diretly with the psu without worries. Set it to say 100ma and only have to check for temperature increase, no more messing with resistorsSometimes i need to check also ignition coils but that things consume at least 7a (and sometimes over the 12a mark of 2 rd6006 in parallel), so i'm thinking to have also a dps5020. Those coils requires a psu that react really fast to sudden current changes. The voltage control feedback of my modded atx simply goes crazyIf i go to the route of the rd6006 i think that i take 2 of them. Each of them with a 500va toroid. So i can do dual voltage easily. Then a second connection for having them in parallel and go to the 5020 module.