[Info-vax] Need special extention cable for power supply output

[glen herrmannsfeldt]

Stephen Hoffman <seaohveh at hoffmanlabs.invalid> wrote:
> On 2013-10-30 18:49:43 +0000, glen herrmannsfeldt said:
 
>> My usual solution is to open the power supply and solder another one in.
 
> Cracking open and modifying an AlphaServer power supply is not 
> something I'd generally recommend in this context.
 
> That approach is potentially slightly more hazardous than knowing which 
> end of the soldering iron to grab, after all.  It also presumes there's 
> room and power in the AlphaServer power supply for another connection, 
> and I don't know that's available in that old AlphaServer.   There are 
> days I don't trust me with a hot soldering iron, either.

Mostly I do it on ATX power supplies, which are cheap enough, and
usually don't have enough connectors.

Power is reasonably independent of the number of connectors, one 
could have old high current disks, or many new, lower current drives.

But yes, one should always be sure that the power supply can 
supply enough current on each voltage, as well as total power.

Many have more than one connector on the same leads, one about half
way and the other at the end, and often with smaller wire than they
should have. The extra inductance, and the coupling of transients
from one drive to another are reasons I try to avoid using the
connectors that way.

-- glen