Past, Present and Future: Siglent SPD3303X Bench Power Supply 

Absolutely go for it! I'd love a cheap 4-quadrant source, and I'd love it even more if I could buy it in kit form, or just a bare board and a BOM.

Watching a PSU power & ride a e-skate board tickled my fancy more than it should have.

I want that OSMU already. Yes please.

Great Idea - I am in! Especially the combination of a power supply together with a simple wave form generator is what I am looking for, for a long time! As a hobbyist, space is always an issue...

Go for it, i would be amazed to see your development process as it's going on.n

95% of the time i have no clue what you are talking about, but i still love your videos. Must be that awesome accent.

Can't wait to have some details and schematics explained!

I will be on the list for the kit.

M8, if you get that project done, I will buy it full price right as it's available. Hot damn, that's an awesome project!

Very good idea! Please make that equipment, it will be very useful for both hobbyists and professionals

Great idea! Make it tough too. I have a variety of hobbies that use DC power (3D printing, automotive, aluminum anodizing, hobby electronics) and having one power supply that can cover all these bases would save me so much money. 30 vdc @ 10 amps covers 95% of the projects I do.

That's a great idea! Consider another one sold when you have it finished

I bought the Siglent SPD3303X-E which is very similar this one. Siglent seems to be the best bang for the buck currently as I have also bought other equipment from Siglent after exhaustive comparisons with other manufacturers.

Waw, that's a beautifull and versatile power supply. I'm still using my self build power supply from Elektor (1982)....

Go For it man! That's really great idea.

OSMU, cool name. Looking forward to see your progress.

Great idea! Insanely great idea! 3 channels (+/- 30V, 10A each?!) I instantly paused the video when I saw the quadrant. I watched the last 2 minutes 3 times! I would love to see lots of videos for this project. What if it also had an ADC for external input that we could use to correlate things?! We could measure motor torque, temperature, and lots of other things in relation to power.

Yes, outstanding idea!

Really would love to see your PSU finished. I've been working on similar ideas for a multi function lab bench psu and variable load.

Wonderful idea!

OSMU sounds a great idea !

Brilliant Idea!

Hoping and praying that you revisit the OSMU one day 🙏🙏🙏

I agree, go for it!

Great to see its working that well on a skateboard ;-)

Interesting! Sounds great!

sounds like a crazy idea.

Great idea indeed!

Very good idea

Good idea! Much wow!

Hammer Idee!

Hell yes on the OSMU!

OSMU , yes! Great idea!

I have rigged together SMU style source before.. The Keithley 236 Schematic was my best friend :D Shouldn't be all that expensive when you dump all the low current stuff under 1uA and compromise on accuracy and resolution. Looking forward to your take on it, I went with several linear PSUs and the analog ground "floating" on the output positive just like Keithley did.

i love your idea, have been toying with that as well. im working on a 4 channel psu, opa548 based with some dacs and an arduino due, the due has an awg sketch on the net, its not hard to adopt that but a real 4 quadrant psu hmmm.... :)

Good idea I think it's a great idea

I am very much on board for a general use SMU! I have to start preparing for not having access to school labs anymore...

Like the idea.

brilliant! I was looking into the 238 but it still only has 1A max source / sink ...

Hell yeah I'd buy one

Go for it! But, if you build the source device, what will I do with my 2450 & 2460 units?

Since there seems to be a real interest in the OSMU you might want to ask Seed studio for manufacturing. They are awesome when it comes to such small projects like this, they are the same guys who manufacture the Crazyflie for Bitcraze :-)

OSMU, yes please! I use 2400 and 2450 at work, they are truly multipurpose instruments.

Good idea for sure. Make a kit and sell it if ever finished. I’ll buy one.

go for it!!!!! maybe a kickstarter?

I own the same HP power supply. I like it because it just works. I also have a ATTEN TPR3020S Then I got my hands on a Agilent power supply (keysight now makes those)

Great, that sounds like a cool piece of hardware I'll need on my desk, OSMU FOR THE WIN!

I dig it

Good idea.

Hell yeah! Just do it!

I wish you made this video last month before I bought RIGOL DP832

Maybe I missed it, but I couldn't see any mention about improvements to the binding posts, compared to the teardown on Dave's EEVBlog. The "loosy-goosy" fit and the wrong horizontal distance of the + and - posts are definitely quite significant disadvantages.

I enjoyed the review of the Siglent and I am really interested in seeing how that +/- 30v/10A project turns out. I am in need of one in that range that is accurate but not with a massive price. Im not cheap, Im frugal lol

Superb idea..... 😍😍😉😉😉👌👌👌

Damned good idea.

Love the cute angry face. Editing like that is so cute :D

Thanks for sharing 😀👍 Interesting ideas, I think you should aim for

Idea of programmable ( ideally opensource ) high-quality 4Q PSU is great, but maybe it would be better to scope only on high-quality PSU and nothing more. Build 4Q function generator as extension for 4Q PSU ( requiring 4Q PSU for supply ) would have several advantages 1) not everybody wants to have 4Q function generator at all 2) some want to have more than one 4Q function generator connected with phase sync and some common potential ( 3p / stepper motor testing anyone ?) 3) it is more probable to success building simple and always looked-for product than something complicated. Advanced power supply unit is always interesting device for every electronician no matter how many and how good power supplies are already on his desk. I wish you ( and am awaiting ) THE SUCCESS! regards, T.

Most day to day use would be as a bench power supply. I'd say that it's worth the complexity cost for the lower temperature regular operation.

If you make it and release it as a kit/BOM I'll buy it. So yes, definitely go for it!

I think I'd enjoy a kit if you'd make one available for your osmu! I like my (garage sale find!) BK Precision 1670 power supply just fine, but multi-channel (beyond the fixed 5V and 12V lines combined with the one variable channel) at least sounds nice... There sure are a lot of chips/things (display panels, etc) that insist on careful power sequencing...

Good idea I think

get the OSMU on crowdsupply! the EEZ psu sold well!

switching pre-reg, before linear reg., driven by (16bit dac) precision voltage reference. The is a project like that on youtube, I can find the link of it

Good Idea! :D

I'd love to see an approximate price to quickly see if it's in range for a hobbyist or strictly pro grade.

Yes please, do it ...

OSMU looks pretty good. Do it!

Superb idea. Where can I send you the money to get one? Joking aside, it's a very useful bit of kit for anyone into electronics. so I will be very interested in tacking the progress on this one.

Oh, yes please! :)

2:08 didn't see that meme comming.

When will the BBBB V3 come out? I made my own The Big Blue Bidirectional Brushless Brutality Beast It is 4800W 48V 3 phase industrial grade induction motor that is pretty slow but has plenty of torque. Had to use a massive driver for it. But it removes screws very good. Especially with a linear carbon based milling bit

Where is the OSMU? Seriously. I'd love to see videos on that.

I want yours 😍

Have Siglent resolve problem with banana connectors.? I.e. standardised distance and loose holes?

I would love a 4 quadrant supply in the lab without busting out the big bucks for a SMU when i work only in lower voltages!

Excelent idea! But if not pico will it have femto?

*You certainly know your shit 👍👍*

OOOOOPPPPPPEEEEENNNNNN Source means everything.

Rigol power supply is far above regarding programmability . You can fully control a Rigol PSU with a simple python program for sequencing and advanced logics .

What have you done with another ambitious project - DNA sequencer?

Since my e-bike battery (and other power electronics) are moving to 10S LiPo, may I kindly suggest raising the SMU voltage limit to ~42V? Or at least leave a provision for 60V. I'm having a hard time finding affordable gear for that voltage and amperage (100-500W). For sourcing I could only come up with series power supplies. For loads, RC ESCs. If you're feeling courageous, also audio amplifiers might work for a second or so.

OSMU project ? where can i sign for it ?

i want moaaaaar !

Yes please to the OSMU

An affordable open smu is such a great idea. is the project going on ? Can we contribute? Or does anyone know something similar? I still haven't found anything else than this video about an diy smu.

Winner winner CD! Linked in test equipment forum - www.eevblog.com/forum/testgear/siglent-3303x-review-by-marco-reps-(and-osmu-project-anouncment)/

did they fix the bana plug issue as well?

Are there any of these bench power supplies in a price range for hobbyists? This thing sadly costs almost 400 euro ... my budged is more like 40 euro :|

what a beautifull story :).... they grow up and get big so fast huh

Still waiting for the OSMU

just do . like knowing about it

Do and become really rich. You deserve it.

Time to get HP 3245A now :P.

3:53 no electric screwdriver, Marco?

I'd get one if the price is right.

Great idea with lots of possible applications,just a shame they will be copied and available on banggood for next to nothing!

I do want one of those 4Q stuff! Do you need spme colaboration? I'd be willing to help and I think I can make myself useful...

If you need a custom transformer supplier for your project, I've used toroidy.pl before and I can recommend them. They custom wound me a 225VA line transformer for around 60-70 euros as a one off about 5 years ago (can't remember if that's before or after tax) and as they're in the EU, it's a lot faster than ones in China an you don't pay any import tax. They do audiophile transformers but you can get a basic model that skips all the features you don't need like encapsulation. That's if you were thinking of keeping it linear. However for the power you describe you'll probably have to go to a switching converter, the complexity of which will probably be too much for you. I started something similar at 3 channels of 40V 4A, 10mV/1mA precision with active PFC, linear output regulators and tracking switching pre-regulators, but even with my experience of switching power supplies, I never finished it.

😘