16 Mar
2004
16 Mar
'04
2:09 a.m.
>>>> "Vintage" == Vintage
Computer Festival <vcf(a)siconic.com> writes:
Vintage> On Tue, 16 Mar 2004, Joe R. wrote:
> ... I opened the chassis and
> found that it was marked as being built to operate off of 72 VDC
> power and that all four connecotr pins are wired tot he PSU. Is
> anyone familar with the type of connector or why or where they use
> 72 VDC power? The computer doesn't look like anything
> exceptional. It
Vintage> It probably ran off of batteries, possibly in a telco
Vintage> environment, where that supply was readily available.
No, Telco standard power is 48V DC. I think its tolerance is pretty
loose (you're supposed to tolerate 60 volts???) but the nominal value
is 48, not 72.
paul