Power Supply Chart? - Page 1
Forum section: electronics / testgear

author: kur1j
author_rank: Newbie
timestamp: November 01, 2021, 04:17:45 pm
content: Anyone know of a guide/recommendation sheet of bench top power supplies with ranges of prices like 0-100$, $101-300, etc. kind of like the o-scope chart?If not is there some that are generally recommended in a various set of price ranges?So I’m looking to get a power supply to power/test some small circuits (arduino/RPi) with some small motors (think small personal fan size).

author: rvalente
author_rank: Frequent Contributor
timestamp: November 01, 2021, 09:35:41 pm
content: You did not specifiy the voltage/current/power needed but, said "small circuits" so:The "basic" general purpose power supply is 30V and 3 to 5A, then:KORAD 3005 seems to be very popuplarRigol DP800 seems very common to.RIDEN 6006, very powerful and compact, but is a switched mode soo noisier.RIDEN DPS modules (like 3003, 30V 3A) are also very cheap and easy to find. With a notebook charger/brick and this small module you can go up to 17V and 2A. Very usefulOther great units are older agilent/hp 6633A and 66332A easy to source , HP 6289A and series is great to, easy to find, bulky and workhorse. 40V 1.5A

author: kur1j
author_rank: Newbie
timestamp: November 02, 2021, 12:13:56 am
content: Thanks!I found this site and it has a lot of units.https://www.tequipment.net/power-supplies/dc-power-supplies/#/power-supplies/dc-power-supplies/saleprice_300-450/saleprice_less-than-300/currentoutput1_variable-4/maxcurrentoutput1_52-a-10-a/Maybe a better question, is there units or brand I should stay away from?I was leaning towards something like this.https://www.tequipment.net/Siglent/SPD3303X-E/DC-Power-Supplies/Lab-Power-Supplies/?v=7421Can get a mixture of best of all worlds. Can combine them to get higher voltages/more current or use multiple channels. Granted I could also just buy independent units but this seems like a nice “package”.

author: beanflying
author_rank: Super Contributor
timestamp: November 02, 2021, 12:30:37 am
content: Given your location there is any amount of good quality branded used units. Even with your current lower level requirements buying a supply with a few channels is a good idea to save the bench space.eBay auction: #255203565282eBay auction: #183905148382

author: rvalente
author_rank: Frequent Contributor
timestamp: November 02, 2021, 12:33:57 am
content: Quote from: beanflying on November 02, 2021, 12:30:37 amTrue! Dual Channel with. Tracking is very handy when working with analog electronics

author: kur1j
author_rank: Newbie
timestamp: November 02, 2021, 01:12:01 am
content: Just curious why I would opt for one of these compared to say the Siglent unit I linked? They seem to go for roughly the same price?

author: beanflying
author_rank: Super Contributor
timestamp: November 02, 2021, 01:18:51 am
content: At the risk of getting a spruik session from Tautech. I do own a bit of Siglent kit and I like it and it is surrounded by HP and Agilent gear.I have a preference for HP/Agilent supplies. There is also some merit (depending on the era) in having a device with circuit diagrams and a full maintenance manual available.

author: tautech
author_rank: Super Contributor
timestamp: November 02, 2021, 01:26:39 am
content: Quote from: beanflying on November 02, 2021, 01:18:51 amback at ya Bean.A 3 year warranty should not be overlooked......

author: ledtester
author_rank: Super Contributor
timestamp: November 02, 2021, 02:31:41 am
content: Quote from: kur1j on November 01, 2021, 04:17:45 pmThe Siglent is an excellent power supply but it is also very pricey for the use cases you have mentioned.Arduinos and RPis run on 5V which is easy to source. To run your small motors I'm sure you could find a power adaptor for < $20. I find a lot of useful power adaptors/supplies at thrift stores like Goodwill and the Salvation Army. I've also found good deals on ebay and my local craigslist -- the key to finding them is to just be patient.