Products > Test Equipment
New Keysight DC Power supply announced!
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Someone:

--- Quote from: nctnico on September 18, 2022, 10:56:35 pm ---
--- Quote from: 2N3055 on September 18, 2022, 10:24:06 pm ---
--- Quote from: electr_peter on September 18, 2022, 09:53:41 pm ---Curved V/I limit curve (with same max power) suggests hybrid topology, i.e. switching pre-regulator plus linear output stage like R&S HMP series and similar PSUs.

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No it doesn't. Switchers also do constant power trick. 80 A PSU is not going to be linear, and noise proves it..

--- End quote ---
I agree. It is nice to see though that Keysight brings this old concept back to life. In the HP days they used to have a whole bunch of these kind of supplies that have a power limit. It makes a PSU much more versatile. I have a pair of HP6012As which are excellent for when a lot of current or high voltage is needed (and the power limit is kind of a conservative estimate). Still, I would like some more modern metering though.

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This looks like a very close competitor to the Aim TTI QPX750SP, continuing their range of "powerflex" supplies. Pricing will be key as always.
Bud:

--- Quote from: 2N3055 on September 18, 2022, 10:24:06 pm ---
--- Quote from: electr_peter on September 18, 2022, 09:53:41 pm ---Curved V/I limit curve (with same max power) suggests hybrid topology, i.e. switching pre-regulator plus linear output stage like R&S HMP series and similar PSUs.

--- End quote ---
No it doesn't. Switchers also do constant power trick. 80 A PSU is not going to be linear, and noise proves it..

--- End quote ---
Net weighf 6.64kg proves it  ;D
floobydust:
Can you charge a battery with it? Don't see mention of it in the datasheet or app notes, no precautions etc. unlike the EDU36311A which requires a lame output diode.
Regen, backspin, large capacitive load, battery potential etc.- unexpected voltage at the output terminals does happen.
I expect a power supply to be robust and cope with any load. Not crowbar it and don't take the backfeed and auto-destruct.

I can't get excited about a product, no right to repair- access to a service manual or at least a power-section schematic, that can get damaged with a common use, and asking Keysight Support over their shortcomings I've been through that and don't waste time taking blame for their own engineering omissions.

Can these new power supplies withstand voltage at the output terminals (4-wire sense as well), when powered off, or the output disabled, or above the setpoint? Yes the OVP function is obviously not enabled when working with these type of loads.
Someone:

--- Quote from: floobydust on September 19, 2022, 02:50:41 am ---Can you charge a battery with it? Don't see mention of it in the datasheet or app notes, no precautions etc. unlike the EDU36311A which requires a lame output diode.
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Its not really clear on that in the datasheet, the manual would probably have more on the matter. The Up/Down programming settling times (rather a mouthful) are suspiciously symmetric, but if it was 2 quadrant you'd expect the specifications to include current + and - ranges rather than 0 to +.
tautech:

--- Quote from: floobydust on September 19, 2022, 02:50:41 am ---Can you charge a battery with it?

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You can charge a battery with any PSU if you take some basic precautions especially to eliminate the chance of any reverse voltage.
I certainly have no concerns punching 30A+ into a 24V series parallel string of 160AH SLA's with my 60A 40V SPS5042X.
Hardly raises the smart fan revs.
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