I like the Keithley 2231A, got it new. It doesn't have quite as many features as the highest model so it was considerably cheaper. It gives you 30V/3A out of channels 1 and 2, 5V/3A out of channel 3. Can connect 1 and 2 in series or parallel to get 60V or 6A, respectively. Easy to save and recall configurations too.
I assume it has current limiting.
Looking good this one, i would go for that one now instead of the R&S.
@Jan Audio, you seem to be looking exclusively at the two far ends of the spectrum: el cheapo "Peaktech" on the one end, and expensive established brands (R&S or Keithley) on the other end.
Nothing wrong with the established US and European brands, of course -- but you have already stated clearly that you cannot afford them. Hence, I think you should have closer look at the Chinese mid-range brands, like Rigol and Siglent. The Siglent SPD3303X-E, for example, should easily meet your requirements and is about half the price of the established brand models you have mentioned.
That is my problem : i checked all the cheaper ones on youtube and i get errors and failures.
btw : the keithley is cheaper then the rigol or siglent.
+ most stuff is also very very big.
edit : I dont want to talk much more about how good the keithley is so the price dont go up.
Now i have to save some money, in maybe 3 month i can buy, it cost 770 euros.
I like the Keithley 2231A, got it new. It doesn't have quite as many features as the highest model so it was considerably cheaper. It gives you 30V/3A out of channels 1 and 2, 5V/3A out of channel 3. Can connect 1 and 2 in series or parallel to get 60V or 6A, respectively. Easy to save and recall configurations too.
I assume it has current limiting.
Looking good this one, i would go for that one now instead of the R&S.
Yes it does. The current is limited to the number you set, from 0A to the rated output.
That is my problem : i checked all the cheaper ones on youtube and i get errors and failures.
Hmm... which "errors and failures" did you see mentioned for the Siglent SPD3303X-E?
(Honest question, since I am pondering buying one myself!)
btw : the keithley is cheaper then the rigol or siglent. [...]
Now i have to save some money, in maybe 3 month i can buy, it cost 770 euros.
How would 770 Euros for the Keithley be cheaper than 440 Euros (or 370 excl. VAT) for the Siglent?
You are right, the siglent with the 1milliamp resolution is € 610,00
For 160 more you have a better brand.
Just dont want any more chinese gambling.
The Keithley branded stuff is manufactured in China, but I have no complaints about the one I have.
Manufacturing in China is highly dependent on how much oversight is given. If you don't give them careful oversight, they can and will find the absolute cheapest way to satisfy your requirements.
You are right, the siglent with the 1milliamp resolution is € 610,00
For 160 more you have a better brand.
Just dont want any more chinese gambling.
Your choice, of course. But equating your Peaktech experience with Rigol and Siglent is misleading.
Regarding the pricing: Since I am looking for a power supply for hobby use, I am considering Siglent's -E model with 10mV resolution, with the firm intent of applying the firmware "upgrade" to 1mV.
Those Keithleys are basicaly Itech...
They are not better deal than Siglent .
But whatever you like..
Regarding the pricing: Since I am looking for a power supply for hobby use, I am considering Siglent's -E model with 10mV resolution, with the firm intent of applying the firmware "upgrade" to 1mV.
Ah, that changes alot, €440,-
Either one is probably better than any of the "el cheapo" ones. To get a much higher end *new* power supply costs significantly more than I want to spend as a hobbyist. The EE department at my school has some of the Keithleys for grad students and researchers to use (undergrads have to use cheap ones haha) and they have apparently done well in service. I bought mine on recommendation from the guy who runs their labs.
Those Keithleys are basicaly Itech...
They are not better deal than Siglent .
But whatever you like..
Hi, what is the exact type-number for this one ?
Do you have a link maybe.
thanks
To get a much higher end *new* power supply costs significantly more than I want to spend as a hobbyist.
Indeed, i cant justify the cost exept that i need it.
It is not a oscilloscope with more advanced software, why does it cost so much ?
The siglent dont have the third channel milliamps limited.
To get a much higher end *new* power supply costs significantly more than I want to spend as a hobbyist.
Indeed, i cant justify the cost exept that i need it.
It is not a oscilloscope with more advanced software, why does it cost so much ?
Designing a power supply that won't explode isn't trivial, but clearly it can be done for affordable prices or the siglents/keithleys wouldn't exist. I don't have any experience with a really high end supply, but perhaps they are better calibrated? I don't know. There is a higher Keithley model than mine that has fancier remote control capabilities and costs about twice as much for the trouble. I didn't need those, so the choice was obvious.
The siglent dont have the third channel milliamps limited.
I recommend getting the keithley, then. I got mine through ebay seller valuetronics_international. They are an authorized Keithley/Tektronix distributor as well as used test equipment and they are pretty flexible on price. They accept my best offer every time I've bought from them.
Or get the OEM one, that's fine too. Either way it's a major step up from the cheap shitty ones. I especially hate ones that have knob control that is super jumpy and makes it hard to set.
Looking at the Keithley / Tektronix PSU line-up I wonder which ones are designed by Keithley/Tektronix. I'm spotting other rebadges as well from GW Instek.
If the parts used inside are exactly the same, then i dont mind the brand.
More links are welcome Nico.
509,- i would buy the itech over siglent + hack for 440,-
both chinese.
Just need to be sure about the parts inside.
for +- 30 V 2A and isolated 0-6V 5A you also have DP831 from Rigol...
easy unlock to full res an all functions
Or buy some Korads!
Despite your sarcasm, not even close...
Worth a try 
I wouldn't want it any other way..
Have a good one..
Looks like the front panel buttons has the feel of a telefunken remote control, not very solid.