[time-nuts] 5087A Distribution Amplifier

Dr Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed May 2 18:11:35 EDT 2007


Brian Kirby wrote:
> I bought an HP 5087A distribution amplifier off of ebay.  "The unit is 
> in good working condition".  Funny the power supply is putting out 120 
> hertz square waves.....which makes all the outputs look like they are 
> oscillating garbage....disconnecting the power supply from the load does 
> not change the situation.  I subbed a test power supply and the 
> amplifiers work fine.
>
> Does anybody have the schematic to just the power supply and could I 
> bother you to scan it and send to me, or a link to get it, or the manual ?
>
> The power supply looks very simple, but the schematic sure makes life 
> easier !
>
> Thanks in advance - Brian N4FMN - kirbybq at bellsouth.net
>
>
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>
>   
Brian

Attached are 2 screen shots of the relevant page.

Bruce
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