Products > Test Equipment
Is there a better power supply option for $700?
JJ_023:
--- Quote from: tautech on January 04, 2024, 01:08:26 am ---
--- Quote from: JJ_023 on January 04, 2024, 01:01:39 am ---
--- Quote from: tautech on January 04, 2024, 12:51:46 am ---Although we don’t yet have a release date, this might be of interest if you’re not in a hurry:
https://www.eevblog.com/forum/testgear/new-siglent-spd4000x-series-power-supply/
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It looks like it might be interesting for sure. I am not in a hurry however who knows when this might come out. I guess if the timing is right I would love to consider it. What is the price of this unit from the latest rumor mill?
On a different note I asked you at one point in a previous post about possibly paralleling or in series several Siglent power supplies together. You said you would check with the company and get back on some of the technical details if it's possible. Did you by any chance find anything out?
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Oh you can be sure I’ve enquired about SPD4kX however Siglent aren’t ready to share anything about it yet. :(
Series mode with multiple units is no problem up to the max of 500V above mains ground but offhand I can’t offer any info about Parallel mode with multiple units.
Sorry on hols for another couple weeks.
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Thank you for making the effort. Enjoy your holiday. :)
Antonio90:
--- Quote from: JJ_023 on January 03, 2024, 10:28:34 pm ---
--- Quote from: Antonio90 on January 03, 2024, 10:03:44 pm ---I have a GW Instek, a GPD-4303S. It works quite well as a psu, reasonably precise, stable, and reliable OCP and OVP, but cannot show the settings of more than two channels at once on the screen, and you have to turn on/of all channels at once. This last flaw is, by far, the worst.
If I were to buy another PSU right now, it would probably be the one you are considering. There is custom firmware in this forum for the GPP, which improves readback speed, and accuracy? Can't recall right now.
I would have a look at AIM-TTI supplies. They are also really precise, with sense terminals on the front, and simple interfaces. More expensive for the same features, and I don't think you will get two quadrant supplies for that budget outside of the GPP. The MX series from TTI look quite nice though.
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Thank you for taking the time to respond. Not being able to show more than 2 channels at the same time might be a nuisance in certain occasions I don't particularly see that as that big of a nuisance. Can you control this on a PC screen?
If I understand you correctly that is a big PITA. I see 4 buttons for channels. What are they for if you can't turn them on and off independently?
I don't necessarily need the 4 channels but it is an appealing feature. I am not familiar with that particular brand I will have to do a little bit of research. Do you have a specific model you would recommend without getting into a different price bracket?
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The buttons are for selecting which channel is receiving input from the adjustment knobs. About the screen showing only two channels, yeah, it is not too big of a deal, as there is a (rather simple) computer interface. This is all for the GPD I have, the GPP you are considering doesn't have any of those problems. The numbers are not as easy to read though.
I was looking at the PL303QMD. But just saw in the datasheet that it has no computer interfaces unles you pick the -P version which is much more expensive. The QL355T is already quite a bit more expensive without interfaces.
I don't think there is a better option from TTI at that price bracket, my apologies.
flano:
--- Quote from: JJ_023 on January 03, 2024, 10:12:04 pm ---Thank you for the data point. What is something that you don't like about the Rigol? I've considered that unit as well.
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Nothing really. It only has 3 channels vs 4 for the GPP-4323, but that's not an issue for me. GPP-4323 also has an electronic load.
The Rigol does everything I need, very happy.
Mike VK4MWL
nctnico:
--- Quote from: flano on January 04, 2024, 08:37:28 am ---
--- Quote from: JJ_023 on January 03, 2024, 10:12:04 pm ---Thank you for the data point. What is something that you don't like about the Rigol? I've considered that unit as well.
--- End quote ---
Nothing really. It only has 3 channels vs 4 for the GPP-4323, but that's not an issue for me. GPP-4323 also has an electronic load.
The Rigol does everything I need, very happy.
--- End quote ---
IIRC the Rigol 930 series does not have seperate grounds for all channels. This could be problematic in some situations.
2N3055:
--- Quote from: nctnico on January 04, 2024, 11:33:25 am ---
--- Quote from: flano on January 04, 2024, 08:37:28 am ---
--- Quote from: JJ_023 on January 03, 2024, 10:12:04 pm ---Thank you for the data point. What is something that you don't like about the Rigol? I've considered that unit as well.
--- End quote ---
Nothing really. It only has 3 channels vs 4 for the GPP-4323, but that's not an issue for me. GPP-4323 also has an electronic load.
The Rigol does everything I need, very happy.
--- End quote ---
IIRC the Rigol 930 series does not have seperate grounds for all channels. This could be problematic in some situations.
--- End quote ---
900 series actually has all 3 ch isolated. It is DP83x that does not isolate ...
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