Best PSU under $1000? - Page 1
Forum section: electronics / testgear

author: bladerunner
author_rank: Newbie
timestamp: June 03, 2022, 07:16:16 am
content: hello,I realize this topic has been done to death. However most of the threads I've found are roughly a year old. I'm hoping to get more recent information.I'm looking for the best PSU I can get under $1000. Here's what I'd like it to include:1) 3 or 4 channels2) Low noise, both for the fan and measurements.3) Low ripple4) Compact size. The smaller the better. I have a small bench area.5) Nice display with as much useful information on it.Even though my budget is decent, I don't need unnecessary bells and whistles.I just want the best bang for my buck. Something that's reliable and good.Looking forward to reading your recommendations.Thank you.

author: nctnico
author_rank: Super Contributor
timestamp: June 03, 2022, 07:48:54 am
content: Not much happens in 1 year where it comes to power supplies so just look at the recent threads on this subject.

author: bladerunner
author_rank: Newbie
timestamp: June 03, 2022, 08:25:02 am
content: Has nothing new come out? Most of the PSU's in the other threads are 5, 6 or 7 years old.In any case, most of the other threads focus on PSU's below $500 or so. My budget is slightly higher, so I'm hoping to get an expanded list of recommendations.thanks

author: nctnico
author_rank: Super Contributor
timestamp: June 03, 2022, 08:27:54 am
content: GW instek gpp-4323 is more recent than that.

author: Berni
author_rank: Super Contributor
timestamp: June 03, 2022, 08:38:19 am
content: That GW Instek from above is indeed a good choice. Otherwise the Rigol DP832 is also still a good feature packed PSU.Not a whole lot has happened in the high end PSU world. It's all still linear PSUs ran by DACs from a digital front panel. The modern units mostly just feature some more up to date remote control interfaces like USB or Ethernet or some better sequencing feature or better measurement (Like energy integration). Tho one unfortunate trend is most PSUs these days having fans inside (This lets them use smaller cheaper heatsinks)I still keep around some oldschool analog PSU from Agilent on my desk, they are still nice for when you just need a quick 5V for something since they don't have any boot time and no complex UI to fumble trough.

author: loki42
author_rank: Frequent Contributor
timestamp: June 03, 2022, 12:17:26 pm
content: I'm basically contemplating the same thing, GW Instek GPP-4323 vs Keysight E36312A vs R&S HMC8043 or maybe something else?

author: bladerunner
author_rank: Newbie
timestamp: June 03, 2022, 04:10:46 pm
content: Quote from: loki42 on June 03, 2022, 12:17:26 pmthanks for the suggestions. I'll take a look at those. I have a decent budget but that doesn't mean I want waste my resources. Keysight is nice but I always feel like I'm overpaying with them

author: nctnico
author_rank: Super Contributor
timestamp: June 03, 2022, 04:27:59 pm
content: Quote from: loki42 on June 03, 2022, 12:17:26 pmIf you consider the Keysight E36312A, then go for the Keysight E36313A which has twice the amount of power. The Keysight E36312A is a bit weak for a bench PSU.

author: thm_w
author_rank: Super Contributor
timestamp: June 03, 2022, 09:45:04 pm
content: They keysight is only 80W and over $1,500 so its not really comparable here IMO.

author: bladerunner
author_rank: Newbie
timestamp: June 03, 2022, 11:54:45 pm
content: I only see one real review for the gpp 4323 from electrobob. Anyone here have more personal experience with it? Interested in hearing from owners who've had it and used it for a while.And any other suggestions are still welcomethanks

author: Someone
author_rank: Super Contributor
timestamp: June 04, 2022, 12:32:26 am
content: Quote from: bladerunner on June 03, 2022, 07:16:16 amThis is test equipment, not consumer GPU/phone/upgrade pump.1 year is a tiny period of time! Test equipment is usually on 10-15 year cycles.

author: nctnico
author_rank: Super Contributor
timestamp: June 04, 2022, 04:25:00 pm
content: Quote from: thm_w on June 03, 2022, 09:45:04 pmIf you set a hard limit on $1000 then it simply is over budget. However the Keysight E36312A / E36313A are nice power supplies. A really nice feature is the low range current measurement so you can see current consumption at the tens of uA level (up to 20mA). The Rigol and Siglent PSU offerings don't come close! Only the GW Instek GPP-4323 can hold a candle compared to the E36313A.

author: mawyatt
author_rank: Super Contributor
timestamp: June 04, 2022, 05:55:40 pm
content: Quote from: nctnico on June 04, 2022, 04:25:00 pmActually the Siglent SDP3303X and GW GPP-4323 have the exact same Setting and Readback Accuracy specs (+-{0.03% + 10mv} & +-{0.3% + 10ma}, neither anywhere near as good as the Keysight +-{0.04% + 5mv} & +-{0.04% + 3ma} Worst Case for Settings and Readback, and on low 20ma range +-{0.25% + 80ua}.So technically the GW doesn't come close either, the Keysight is a completely different class of power supply!!In actual use, we have a GPP-4323 and three SDP3303X in use, so no speculation here. The extra resolution digit of the GPP-4323 may be useful but not accurate. With a 10mv or 10ma accuracy spec how is one going to put faith in a 100uV or 100uA digit!!The overall stability of the output voltage is better on the GPP than the SDP, which is already pretty good for GP PS.Of course both SDP and GPP supplies have issues, the front panel terminal placement and operation idiosyncrasy of the SDP and the placement of Ch4 to the far left and lack of any calibration method for users (none that we are aware of) for the GPP. These issues aside we think both are very good GP PS for lab use and why we have and use both types.Best,

author: loki42
author_rank: Frequent Contributor
timestamp: June 05, 2022, 12:36:00 am
content: I'm not sure what I'd want more than a couple of watts for. Smaller the better is point 4 in the OP and for working with micros and analog audio stuff I've never set my current agilent psu / smu for over 0.2 amps at 12v or 9 v. LAN control is vital for me though as is good measurement accuracy especially logging over time or some kind of statistics / peak hold.

author: Black Phoenix
author_rank: Super Contributor
timestamp: June 08, 2022, 05:21:52 am
content: I will leave this here:https://www.eevblog.com/forum/crowd-funded-projects/eez-bench-box-3-sequel-to-eez-h24005/It's up to you if it fits your needs.