Products > Test Equipment
B&K precision 9206 PSU
(1/2) > >>
Kanbus:
Hi all.

In a weak moment when browsing through DBA (a Danish eBay equivalent) I saw a listing for the B&K precision 9206 PSU. I sent him an offer and i he agreed.
The day after and 2500Dkr poorer (ca 350$) I picked it up.

Did I really need this supply? Yes absolutely ;D

Until now, I've used one of those DPS5005 PSU modules and three lab-top power bricks in series and mounted in a box. This setup is working but the leakage voltage to chassis is much higher than I'm comfortable with.

I haven't seen any review
s on the 9206 so I'll post some pics and my initial thoughts of it for the next person interested.

My unit is like new. I even had the honour of pealing the screen protector off
 

The key specs:

Output Rating
Voltage 0-150 V
Current 0-10 A
Power 600 W

Line Regulation
Voltage ≤ 0.01%+15 mV
Current ≤ 0.05%+10 mA

Load Regulation
Voltage ≤ 0.01%+15 mV
Current ≤ 0.05%+10 mA

Ripple and Noise (20 Hz - 20 MHz)
Voltage ≤ 50 mVpp
Current ≤ 15 mArms

Programming Resolution
Voltage 1 mV
Current 0.1 mA

Readback Resolution
Voltage 1 mV
Current 0.1 mA

Programming Accuracy ± (%output+offset)
Voltage ≤ 0.03%+20 mV
Current ≤ 0.1%+25 mA

Readback Accuracy ± (%output+offset)
Voltage ≤ 0.03%+20 mV
Current ≤ 0.1%+25 mA

This thing is seriously heavy. 15kg. And I had it with me through the Copenhagen metro to get home.
It's big too. 8.45” x 3.47” x 17.52” (214.5 x 88.2 x 445 mm).
 
Having a keypad on a PSU with this high voltage, current and the programming resolution, it’s nice to have the keypad. All in all, I think the user interface is good. Maybe I would have liked it more if it automatically switched from set voltage and current to the measured values when enabling the output.

I have had the need for a programmable PSU before, now I have one.
It has both USB, RS-232 and GPIB interface on the rear panel.
This is where the voltage sense terminals are too. Furthermore, there is a DVM input. Why this is only 0 - 60V on a 150V PSU is beyond me… I won’t use it anyway.

Remember the 15kg? Why all the weight you ask?? This is a switching supply after all!
It sure is, but they opted to using a GIGANTIC toroidal transformer before the switcher.
 
One thing that does not impress me much, is the layout. It’s a bit cunfusing with all the wires crossing everywhere.
I shouldn’t complain though. I can’t do it better myself.

The huge output capacitance and the mounting of the caps is the same construction as on my HP E3631A. Right on the output banana jacks. It’s even floating in free air like on the HP.
 
I think the former owner might have changed the rear fan. The wire was soldered and heat srunk and the fan is only mounted with two bolts. Maybe it always have been…
 
It was easy to take apart and put together. Now it has found it’s resting place omong new friends.
 
If you have any questions or want me to take some measurements, just ask.
Kanbus:
With friends
coromonadalix:
and you block  vent holes ????  you should at least  create 1/2 inch minimum space between your thingies
Kanbus:
The HP and BK both have the fan to the rear and vent holes on both sides. The TTI has the heat sink on the rear. The siglent's are not blocked. Where do you get the 1/2 inch from? It's not in the HP, TTI or BK manual or datasheet, and here it is not applicable to the siglent's. Ambient temp in the lab won't exceed 30c. But I can take some temp measurements under load if you fear for my equipments wellbeing?
nidlaX:
I will say that the 920x series of power supplies from BK are absolutely fantastic. Keep your eye out for them on eBay, I got my basically new 9205 for cheap as well.

Although they're very heavy and deep, they're hugely capable with a good UI and actually sane fan control curve for quiet operation. BK customer support was also great the last time I talked to them.
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod