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Siglent SPD3303D review

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Zbig:

--- Quote from: FrankBuss on September 10, 2013, 02:13:59 pm ---Thanks, so my unit is not broken. I hope they know a fix, or we have to reverse engineering the circuit and try to fix it ourselves :)

--- End quote ---

Yeah, would be great if they come with a fix for this. But when it comes to messing around with it by myslef, I think I'd just rather learn to disconnect my DUT physically first before turning the power off and vice versa. Now, that recovery overshoot could be another story, I wasn't aware of that...

Zbig:

--- Quote from: Hydrawerk on September 10, 2013, 02:25:03 pm ---I miss a numeric keyboard on this Siglent PSU. Even some old PSUs have it.

--- End quote ---

Well, the one on your photo doesn't have any knob so it better have some way of selecting the voltage ;-) I too wouldn't mind additional numeric keypad but it's not a deal breaker for me in any way. I imagine this could even be safer sometimes as it's much easier to accidentaly punch in 29V instead of 2.9V than to accidentally crank it up all the way up with a knob.

Zbig:
As promised, I attach my results (SPD3303S, HW1.0)

FrankBuss:
Looks very similar to my oscillograms, and I can confirm your examples with no load, the impulses are longer. This is a confirmation that it is a design bug. Or a series production error, some wrong components.

djeans:
abo !

Frank, Thanks for the review. Exactly what I was looking for.
As I saw, you bought this PSU on ebay.
I am fighting with myself since more the 3 weeks  to not buy ... still fighting :)

Regading the spikes: would a big capacitor help, something like 4700ยต or so ?

EDIT: forgot to ask: is this thing hackable? I mean that you get an S model with a simple hack? I can not imagine that they have build something different.

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