[volt-nuts] Optimation, Inc. CS-110 Precision Current Source

[Roy Phillips]

Dear all
Slightly off this subject, can anyone suggest a source of 25 Kohm, 10 turn 
pots. suitable for replacing the voltage setting pot. for an HP 6825A 
Bi-Polar PSU.
Thanks
Roy


--------------------------------------------------
From: "Bob Smither" <smither at c-c-i.com>
Sent: Saturday, August 20, 2011 6:47 PM
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Subject: [volt-nuts] Optimation, Inc. CS-110 Precision Current Source

> Fellow Voltage Aficionados,
>
> I found a CS-110 at a local electronics hobby / fun / junk shop and
> could not resist it at $20.00  It appears to be in good condition, but
> appears to not work.  At least it does not smoke when turned on :-).
>
> Unit is in a nice metal 19" rack enclosure, black front panel with white
> lettering.
>
> The markings on the front are:
>
>   CS-110     Precision Current Source
>   Optimation, Inc.
>
> The front panel knobs are labeled:
>
>   Current Range (1 - 10 uA; 10 - 100 uA; ...; 100 - 1000 mA;
>                  1 - 10 A; 10 - 100 A)
>   (8 positions)
>
>   Coarse Mult (0 - .1; .1 - .2; ...; .9 - 1.0; 1.0 - 1.1)
>   (11 positions)
>
>   Fine Mult
>   (10 turn dial with 000 - 999 readout)
>
>   Output binding posts (2)
>   1 uA to 1000 mA
>
> From looking at the circuitry and the binding posts it is clear that
> the unit cannot provide the higher current ranges.  I am guessing that
> the Hi Cur Amp output (see following) must hook to a second box of some
> kind.
>
> The back panel has two BNC connectors:
>
>   Ref In
>   Hi Cur Amp
>
> There is also a fuse and an exposed pot labeled Current Adjust.  A
> capped off hole (under the Ref In BNC) says Quad In.
>
> Google has not been very helpful - I found the optimate.com domain,
> apparently associated with Optimation, Inc. but the links are dead.
>
> So my questions:
>
> Anyone know anything about the CS-110?
>
> Anyone know where I could find documentation for the CS-110?
>
> Does it have to have a reference input?  What value?  Is it AC or DC (or
> maybe either)?
>
> Any other insight would be very appreciated!
>
> Thanks!
> -- 
> Bob Smither, PhD                                   Circuit Concepts, Inc.
> -------------------------------------------------------------------------
>               The end move in politics is always to pick up a gun.
>                 -- Buckminster Fuller
> -------------------------------------------------------------------------
> Smither at C-C-I.Com  http://www.C-C-I.Com  281-331-2744(office)  -4616(fax)
>



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