[time-nuts] HP 59551A Power Supply Needed

Bruce Griffiths bruce.griffiths at xtra.co.nz
Mon Oct 20 21:44:42 UTC 2008


Joe Cline wrote:
> Hi Everyone!
>
>  
>
> I just purchased a HP 59551A GPS Measurements Synchronization Module on
> eBay, and I ran into a snag with the power supply. This model is supposed to
> have an IEC 320 jack and be able to run on run on 120 VAC or 129 VDC, but it
> has only an XLR 3-pin jack with a tag for 129 VDC! I can find no schematic
> to verify power requirements. Even if this unit accepts 129 VDC, what is the
> current rating, and who makes a simple supply capable of providing the
> needed wattage? I could probably put together a homebrew supply, but it
> would be nice to design it for the required load.
>
>  
>
> Does anyone have any experience or source for technical information for the
> 59551A? I appreciate any help you could provide.
>
>  
>
> Thanks,
>
>  
>
> Joe / KN5U
>   
Joe

Since the 59551A is rated at 50VA with an AC input the dc requirements 
is likely to be of a similar order.
Thus its highly likely that a 129V dc 1A supply is overkill and a supply 
rated at 0.5A may suffice.


Bruce



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