Products > Test Equipment

RIGOL DP711 and DP712 new 1ch PSU

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bitseeker:

--- Quote from: atarijedi on October 09, 2017, 08:39:05 am ---So looking at photos, I noticed the safety info beside the plug on the DP711 states a max of 300W/400VA. Does that mean its actually capable of 60V 5A?

--- End quote ---

Hi atarijedi. Welcome to the forum.

You're looking at the input power limit. Unless a power supply has 100% efficiency (not possible) and designed to output that much power, the output power rating will not be anywhere near the input one.

It's always best to read the product specifications, http://int.rigol.com/File/ModelTechDoc/20160503/DP700_DataSheet_EN.pdf , where you'll find the output limit is 150W and the maximum voltage and current depend on the model you choose.

bson:

--- Quote from: Eric-H on March 16, 2017, 09:57:55 am ---I did have to break the "Warranty void if removed"-sticker to find the bad cap. :P

--- End quote ---
Americans can just remove them since they violate federal law.
https://www.extremetech.com/gaming/233120-microsoft-sony-and-other-manufacturers-still-use-illegal-warranty-void-if-removed-stickers

bitseeker:
Thanks. Interesting article, bson.

bitbanger:
I know this is a bit of an old thread but just a note from a DP711 owner: look carefully at specs. High res doesn't mean high accuracy! I was happy with the supply so after a few months decided to upgrade without considering this.

Output is within 0.7mV on a 6-1/2 digit DMM. However the DP711 readout is out nearly 12mV. After looking at the specs this is technically "in"("Annual Accuracy: Readback: Voltage 0.05% + 20 mV") but I can't understand why or how you can control to 1mV but your meter is off 12mV (I would assume that in a new power supply like this your display should be showing the ADC value used for feedback control)? This held with and without load.

bitseeker:
Correct. Accuracy and resolution are two different characteristics.

Here's an example. If someone "calibrated" the power supply to be off by, say, 5 volts, then it would have terrible accuracy, but retain its high resolution.

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