[Hallb-engineering] DynaPower Box Supplies

Bill Merz merz at jlab.org
Wed Jan 12 14:11:28 EST 2011

If the problem is that you need a replacement transductor head or 
electronics you should be able to purchase something from Danfysik as a 
drop in as long as the "Current signal" is compatible with the Dynapower 
regulator. You would need to buy a complete system...transductor head 
and electronics, but it should just work fine. Hitek also makes a 
precision transductor which may also work if you need 10PPM type of 


On 1/12/2011 2:00 PM, Krister Bruhwel wrote:
> Hello,
> I had a ZFCT chassis fail in November of 2010 on one of our Moeller 
> Power Supplies (8000A 40V).  As our spare needed a mounting bracket 
> that wasn't included, I robbed the chassis from an unused supply (the 
> downstream Moeller because we are running TPE) .  Upon asking 
> DynaPower for repair/replacement, I was met with some ambiguity and 
> they would look into the problem.  Today I talked with Peter Abele, 
> the Senior Sales Engineer, and his message was that they are still in 
> the power supply business but they can no longer repair or manufacture 
> the ZFCT chassis' or heads.  He will work with us on a long term 
> solution of trying to retrofit something (undefined as of yet) or 
> using shunts if the accuracy is sufficient.
> This message may impact anyone that needs to support a box supply from 
> DynaPower.  At present Hall B does not have a spare ZFCT chassis.  
> After I get a bracket made, I will need to test the unused spare, to 
> ensure we can use both Moellers for upcoming experiments.  If anyone 
> has a ZFCT chassis that I can use as a spare, please let me know.   If 
> anyone knows of options that we can utilize in the short or long term, 
> please let me know.   Its important for Hall B to understand that this 
> may affect experiments in the future as we have no spares at present.
> These supplies are to be used through the 12GeV upgrade and a long 
> range solution is needed.
> I will advise as more details become relevant, and please forward this 
> message to concerned parties.
> Regards,
> Krister Bruhwel

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