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HP 6632A 20V 5Amps Programmable PSU

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T4P:
Just saw one on ebay for 100USD
Is it worth the money? For a second PSU

bingo600:
I have 2 6632B's , i think it's the same model but with a VFD instead of LCD.

They are super precise , and can sink & source current.
The meters are/were the most accurate i had when i bought them.
So i ended up buying an Agilent 34401A DMM , just to verify & calibrate  them.

All in all my best PSU's  , but a bit noisy.  (As in more than a Rigol scope) :-\

I actually ended up getting & repairing a HP E3610A , for doing longtime tests on voltage ref's.
That one has no fans ....

But i wouldn't miss out on my 6632B's , i just don't want them on 24/7 for longtime tests.

/Bingo

Ps: I just saw it  ;) - I guess "No postage"
      Nice price .....

bingo600:
I wrote a GPIB-program for my Prologix , to characterize/profile the PSU's on my new Agilent 34401A.
And the result is rather nice , gpib is stepping the voltage from 0..20v in 100mV steps , and reading the voltage from the 34401A.

Attached are 2 excel sheets of the results  ... Deviation from center (gpib specified/programmed voltage)

I got an Agilent & a HP 6632B , and one can cleary see that Agilent modified the firmware in the newer  Agilent model. See how the voltage ramps up , instead of the "random on the HP"

/Bingo

T4P:
Nice. Actually so as to speak i don't really want a linear power supply, i know HP can do a good job of a switching supply so i don't want a linear supply
Not that i am not open to options ... but i can't find a HP linear supply sold locally for less then 150$ ...
So yeah, 6632 it shall be
Thanks guys,
Dave

bingo600:
Ehh ....

The 6632 is linear  ;)

/Bingo

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