Products > Test Equipment
E36300 Series Programmable DC Power Supplies (E36311A, E36312A, E36313A)
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rsjsouza:
Some additional waveforms: 500Mhz Peakdetect mode in the same 500\$\Omega\$ load. Various runs were done that showed the same basic waveforms but with varying peaks.

Channel 1: the highest peak


Channel 2: the longest train of transients




Channel 3: the quietest


At any rate, the transient train does not seem to extend for much more than 300ns, which is quite the improvement over previous reports in the hundreds of ms. From these waveforms, the worst case would be 34V applied during all 300ns on the specified load, which would yield a total energy fo 690nJ.


--- Quote from: bitseeker on August 18, 2018, 06:15:58 pm ---
--- Quote from: rsjsouza on August 18, 2018, 09:08:27 am ---Other aspects that were mentioned by others: the PS still draws 10W (!) in standby and the backlight still seems to be turned on all the time (there is a faint glow on the screen). |O

--- End quote ---

Is the cooling fan still running like it was before?

I'm still puzzled by that vampire power draw. It's not like the thing has an OCXO in it. Does it boot faster from standby and, hence, needs 10W to keep it ready to turn on?

--- End quote ---
The cooling fan runs all the time.
nctnico:
I'll do some tests myself when I can. I'm pretty sure these transients are induced into the ground loop between the PSU and the oscilloscope and are not actually present on the outputs.
TheSteve:
Someone perform the same tests with a handheld/battery powered/fully isolated scope.
nctnico:

--- Quote from: TheSteve on August 19, 2018, 09:27:36 pm ---Someone perform the same tests with a handheld/battery powered/fully isolated scope.

--- End quote ---
I was thinking about using a differential probe but I also have a MicSig tablet scope which is battery powered. It will probably be the end of the week when I can do some testing.
bitseeker:
That'll be interesting to see. Thanks, nctnico.
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