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Bench Power Supply and Function Generator Recommendations

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Kane:
Hi,

I've been searching the forums for information on a decent bench power supply and waveform generator and have found great information but I want to make sure I'm not missing anything as some of the posts are quite dated.

The power supply I am looking at currently is the Rigol DP832. I was comparing it against the Siglent SPD3303X-E which is another popular recommended power supply on here but ch.3 is severely limited with no readback or voltage/current control, just a toggle switch for 2.5, 3.3 and 5V which is a pretty big dealbreaker for me. I also like the keypad of the Rigol.

However, I have seen many complaints about power on spikes which were supposedly fixed but have popped up on the forum recently from time to time and I want to be assured that this isn't an issue or won't damage anything. Another question I had was does the display still not update until you finish turning the knob as shown in EEVblog #509

What are the main big differences between these two that I may have missed? I know the Rigol ch.2 and ch.3 aren't isolated but I don't think this is an issue since you can just use channel 1 as the negative supply, 2 as the positive and 3 as the logic.

Another issue with the DP832 is the size, does anybody know the dimensions without the big rubber feet, from back of the right angle cable to the front of the binding posts?

On to the function generator, I've been looking at the Siglent SDG1032X to pair with my Siglent SDS 1104X-E so that I can produce bode plots for control loop stability testing and analysis. Is this good enough for this purpose or should I wait until I can get the Siglent SDG2042X?

I am from the UK and the prices for the items are as follows:

Rigol DP832: £450
Siglent SPD3303X-E: £380
Siglent SDG1032X: £280
Siglent SDG2042X: £490

tautech:

--- Quote from: Kane on May 16, 2023, 09:41:54 pm ---What are the main big differences between these two that I may have missed? I know the Rigol ch.2 and ch.3 aren't isolated but I don't think this is an issue since you can just use channel 1 as the negative supply, 2 as the positive and 3 as the logic.
--- End quote ---
That's just fine until the day you need 3 fully isolated supplies.

And with SPD3303X-E you can series all outputs for a total of ~69V and run multiple units in series up to 500V max above mains Gnd.
You might not need such versatility.  :-//


--- Quote ---On to the function generator, I've been looking at the Siglent SDG1032X to pair with my Siglent SDS 1104X-E so that I can produce bode plots for control loop stability testing and analysis. Is this good enough for this purpose or should I wait until I can get the Siglent SDG2042X?
--- End quote ---
2042X is certainly the better AWG being 16 bit and improvable to 120 MHz yet 1032X here outsell it as a well priced GP AWG.
Either will PnP just fine with your scope.

coromonadalix:
"Improvable"  cough cough as  "Hackable"   loll cough cough

woody:
Might be over your budget, but I like the MX100T(P)

https://www.aimtti.com/product-category/dc-power-supplies/aim-mxseries

Nice power supply, silent enough, good support, and from Old Blighty :-)

Regarding the FG, I concur with @tautech. The 2042X is great value for the money.

alm:

--- Quote from: tautech on May 16, 2023, 09:59:07 pm ---And with SPD3303X-E you can series all outputs for a total of ~69V and run multiple units in series up to 500V max above mains Gnd.
You might not need such versatility.  :-//

--- End quote ---

That's fine, until you need three adjustable channels and all with metering? You might not need such flexibility, however :P.

I find unmetered channels without variable current limit borderline useless. Why would I use a bench supply for that? I don't want to fry the digital logic either if something goes wrong.

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