24VDC to 12VDC converters: 0V connections


Sv Garulfo
 

Hi all,

On GARULFO, and I suspect on other A54s and maybe SM, there are three 24VDC to 12VDC converters, marked “permanent”, “hydra/iscan v90” and “VHF icom”.

Of those, only the “permanent” one has the input +0V and the output +0V posts connected. 

Does anyone know why that is?
Why shouldn’t the other 2 be the same?

In one pic:



Thanks


Best,


Thomas
GARULFO 
A54-122
Tahiti 



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