Products > Test Equipment

E36300 Series Programmable DC Power Supplies (E36311A, E36312A, E36313A)

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nctnico:

--- Quote from: Keysight DanielBogdanoff on December 19, 2017, 04:43:51 am ---Quick update. There are a number of bug fixes in the works, especially around things that cause the supply to hang/crash. I'm working to get you all a beta code release, but nothing official will come out until the January time frame.

R&D is monitoring this thread as well.

Thanks for your patience!

--- End quote ---
Daniel,
Can you please comment on whether the voltage spikes (when mains gets connected) will be fixed or not. For me they are an absolute deal breaker.

HighVoltage:

--- Quote from: Keysight DanielBogdanoff on December 19, 2017, 04:43:51 am ---
I'm working to get you all a beta code release,

--- End quote ---

Thank you, Daniel, this is really appreciated!

Keysight DanielBogdanoff:
@nctnico I don't know yet, but I'll let you know!

Andrey_irk:

--- Quote from: Ahrenp on December 18, 2017, 01:33:52 am ---Upon further testing, it would seem that the threshold to go into CC mode is around 10mA.

If I connect an LED across the output and set the supply to some voltage below the LEDs expected forward voltage at 10mA, supply current set to 10mA, and then start turning up the voltage, the supply will stay in CV mode and the current will rise to >20mA before CC mode kicks on and brings the voltage down. In my previous test with blue LEDs my 5V set-point was not high enough to drive more than 20mA through the LED and therefore the supply stayed in CV mode. If I had set my voltage higher, >>Vf of my blue LEDs, I would not have had an issue. Once CC mode is enabled programming/readback accuracy are within spec.

Still not impressed with the spikes on the output when plugging it in/turning on the power bar though.

--- End quote ---

What output capacitance does it have? Maybe it is enough to kill an LED when it switches from CV to CC. And if it is so then there is nothing they can do.

Has anyone figured the way it works? Does it have multiple secondaries or a preregulator? A lot of wires coming from the transformer suggest multiple windings, but why do they need these big caps then?

nctnico:
Any PSU ramps up the output until either CV or CC is hit after you enable the outputs and with the load attached. OTOH the output capacitor will discharge first before going into CC mode if you connect a load after the output has been enabled.

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