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Bench Power Supply and Function Generator Recommendations

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Faranight:

--- Quote from: mawyatt on May 17, 2023, 03:53:30 pm ---Edit: These SPD3303X are far from perfect tho, the UI is a little quirky and takes some time to get a feel for, and the placement of the output terminals is inexcusable, they are not on standard spacing and prevent using standard dual banana plugs |O

--- End quote ---
Oh, yeah, that's something that I did forget to mention. The thing that bothers me about the UI are the two arrow buttons that switch between different parameters and the "Fine" button. These could have been designed better IMHO. The banana socket spacing on SPD3303 is also not the standard 3/4 inch (19.05mm), but rather something arbitrary. Kinda bummer, I think Dave did a wah wah wah in one of his review videos on this unit.

EDIT: Found it:
.

EDIT2: Also, having watched this video over again, I can say that some of the things have improved since the video was shot. For example, the UI seems to have been upgraded (looking at my own unit) and is now displaying what Dave wanted to see (setpoint voltage/current/power and the actual output voltage/current/power). The banana sockets seem a bit better than the ones in the video (at least mine don't wiggle as the ones on the video did). The relay switching works fine (I can hear clicks once the output is enabled). The fan is pretty silent. I don't know, I haven't opened the thing to check for rust. ;)

The good thing about it though is that it also has a LAN port on the back, so, you can control it remotely over SCPI. I'm planning to upgrade my bench in the near future and install a switch for all the instruments that I use (or will use in the future). The vast majority of them have a LAN port available (SDG2042X included).

mawyatt:
Did you note the use of the ADI AD7792 ADC and ADR03A Voltage Reference in Dave's video, these are not cheap ICs. One of the many reasons the SPD3303X produces clean, accurate and stable output results!!

Sometimes you get a little more that you paid for, seldom much more, but often much less!!!

Best,

Brad808:

--- Quote from: Faranight on May 17, 2023, 05:13:03 pm ---The thing that bothers me about the UI are the two arrow buttons that switch between different parameters and the "Fine" button.

--- End quote ---

I've been using mine for 2.5 years and it still screws me up. I don't know who thought that was a good design  :o.

nctnico:
My choice for decent, multi-channel bench PSU would be the GW Instek GPP-4323 (or a different model from the same series) if budget permits. This is the least compromised model compared to the Rigol and Siglent units mentioned earlier. On top of that, the GPP-4300 series can also be used as a DC load which could come in handy.

Kane:
Thanks for all the replies, I agree the GW Instek GPP-4323 is a nice supply but it is £830 here which around double what the Rigol DP832 and Siglent SPD3303X-E are. I decided on the Rigol DP832 and the Siglent SDG2042X instead of the 1000x series. They should be coming on Monday or so.

Can somebody point me to the relevant threads for "improving" the DP832 and SDG2042X  ;)

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