8 Mar
2015
8 Mar
'15
5:38 a.m.
60 hz? Little wall wart transformer with 1 diode feeding a 7805. Done.
enviado do meu telemovel
Em 08/03/2015 06:57, "Joseph Lenox" <lenox.joseph at gmail.com> escreveu:
Well, you could make some clock-generation hw and run
it off the 5V
standby on ATX. Seems straightforward-enough.
On 03/07/2015 09:38 PM, Earl Evans wrote:
Hello fellow DEC enthusiasts,
I have a BA11-N mounting box with Q18 9-slot quad-height backplane. The
power supply is toast. My goal is to hack it into something useful.
I'd like to replace the power supply with a sufficiently-powered ATX PSU.
I've read the instructions at:
http://www.diane-neisius.de/pdp11/index_E.html#atx
However, unlike the DEC PSU, the ATX power supply won't supply a 60 Hz
line
time clock (LTC) signal to the backplane via BEVENT. So, my question - has
anyone used a standard ATX PSU for a PDP-11 QBUS system, and if so, how'd
you work around the LTC issue?
Once I solve the power issue, I have 11/23 CPU cards, RAM, and SLUs
galore.
I'm not planning to make this very power hungry though.
Thanks!
- Earl
--
--Joseph Lenox, BS, MS
I'm an engineer. I solve problems.