New Siglent SPD4000X series power supply

[tautech]

Prices are up on the NA site although this page doesn't seem to show up from their front page yet.    https://siglentna.com/products/dc-power-supply/spd4000x-series/

SPD4323x is $680, SPD4121 is $780 and SPD4306X is $950.

Welcome to the forum.

Pricing is correct and official release is just a few days away.

[thm_w]

SPD4121X would have been great but not sure I understand the choice of a 12V maximum output (12V 10A x2, 15V 1.5A x2).
Usually for automotive/battery simulation you'd want around 13 or 14V.
Even for testing a 12V product, you'd sometimes want to try +/-10%.

This is why ~6.3V is somewhat standard (for use with 5V designs).

[exe]

This is why ~6.3V is somewhat standard (for use with 5V designs).

Ha-ha, I thought it's for vacuum tubes.

[KungFuJosh]

SPD4121X would have been great but not sure I understand the choice of a 12V maximum output (12V 10A x2, 15V 1.5A x2).

I don't know why they chose those specific specs, but each of the 3 models appears to be geared towards different V/A requirements. The SPD4323X would be the only version I would consider, and that has nothing to do with it being the cheapest...which doesn't hurt either.

ETA: Okay, price did matter. I just looked again at the SPD4306X, and those specs would work too, but not for the price.

[KungFuJosh]

Hmmm, this is interesting...

SPD4306X:
Weight   26.46 lbs
Dimensions   8.7 × 14.17 × 5.24 in

SPD4121X:
Weight   26.46 lbs
Dimensions   8.7 × 14.17 × 5.24 in

SPD4323X:
Weight   17.64 lbs
Dimensions   8.7 × 11.8 × 5.24 in

Seems like 2 of those might be the same hardware. I wonder what that might inspire. 🥸

[thm_w]

This is why ~6.3V is somewhat standard (for use with 5V designs).

Ha-ha, I thought it's for vacuum tubes.

For me if designing a lab PSU for use with valves (or 6V batteries) you'd probably choose ~8V.
You can look around at whats commonly available for lab PSUs: 60V, 50V, 30V, 27V, 15V, 6V, etc. Which makes sense for use on 48V, 24V, 12V, and 5V systems. 10-20% headroom.

12V - 10% gives you 10-11V, which no one uses as a standard voltage.

Hmmm, this is interesting...

SPD4306X: Weight   26.46 lbs - 15V 1.5A, 1A, 30V 6A x2
SPD4121X: Weight   26.46 lbs - 15V 1.5A x2, 12V 10A x2
SPD4323X: Weight   17.64 lbs - 6V 3.2A x2, 32V 3.2A x2

Seems like 2 of those might be the same hardware. I wonder what that might inspire. 🥸

I added the voltage specs above. Its a completely different transformer winding I would think.

[KungFuJosh]

Its a completely different transformer winding I would think.

That's certainly one possibility, but it's not the only possibility. Let's speculate! 😉

[tautech]

Released today June 28 2024.

https://int.siglent.com/products-overview/spd4000x/
https://siglentna.com/power-supplies/spd4000x-series-programmable-linear-dc-power-supply/
https://www.siglenteu.com/power-supplies/spd4000x-series-programmable-linear-dc-power-supply/

Datasheet attached.

[hpw]

Is there any SPS4000X_Service_manual seen/given yet? As the SPS5000X_Service_manual even exists already.

While the Ch1/Ch4 meter alters IMHO a bit to much as cold to warm up .. and how user calibration values alters the meters.

Hp

[tautech]

Is there any SPS4000X_Service_manual seen/given yet?

Not yet.

As the SPS5000X_Service_manual even exists already.

It's been released for 3 years.
https://www.eevblog.com/forum/testgear/siglent-sps5000x-psus-coming/

While the Ch1/Ch4 meter alters IMHO a bit to much as cold to warm up .. and how user calibration values alters the meters.

Which product ?

[Kawakneurder]

Looks like quite an interesting supply, the 4323X and 4306X especially.
Noise and load regulation are exceptional for the high current output (compared to similarly priced PSUs).

I am wondering about transient behavior (ex. time to switch from CV to CC mode, and residual energy in the output if it suddenly switches to CC mode).
@Tautech Do you have any idea how large the output capacitance is? Or do we have to wait for a teardown from Dave

[pdenisowski]

hm, keypad and 1 rotary encoder... So you want to adjust the output voltage on CH1. You turn the encoder and ooops, magic smoke. You just adjusted CH2.

Many lab power supplies have the ability to set overvoltage and overcurrent thresholds on a per channel basis - if you try to exceed the limit, the channel is disabled.  This has kept me from blowing up all kinds of things over the years

[pdenisowski]

Perhaps you are right but maybe if the people would carelessly use leads with bare metal showing in HV situations it may be advantageous in the long run to allow them to win their award. 

Does this count? It's only 40 amps at 20 volts ...

(Please don't try this at home)