Products > Test Equipment
My poor mans SMU - The Agilent 66311B
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TheSteve:
I believe they all control fan speed based on current sourced or sinked - in my case it was loud even at the minimum setting which starts at about 8.7 volts.
mtdoc:
Mine arrived today and it looks like I lucked out and got one with a knob and a bright display.  :)
nctnico:
I checked mine against a Keysight 34461A and it seemed to be 10mV off. One of the reasons is that the setting accuracy isn't that good (a few mV per step). I performed the voltage calibration procedure and that made sure the reading on the 66311B matches the 34461A.
mtdoc:
Well, I've fired mine up and played around with it a bit. Yes, the fan is loud!.  I think I will replace it with one of these Vantec temp controlled fans.  I did that with my HP 6632A and it worked well. It might be a risk if it was being pushed to its power limits for extended periods but I'm not likely to do that.

Also, I think front binding posts are in order. I see the cutouts are there but no easy access output pads next to them as there is in the HP 6632A.

Selectech:
My unit arrived today. No knob, but blue tape on the side said it was working -- and it is working. Bright, even display, checked some current & voltage settings. Control buttons all work ok.
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