PDP-11 with ATX power supply

[kirkbdavis at hush.com]

This page discusses making a small pdp-11 system which may be useful:

http://www.pdp-11.nl/ba11-boxes/ba11va/ba11va-info.html

Kirk


On March 8, 2015 at 5:30 AM, "Alexandre Souza" <alexandre.tabajara at gmail.com> wrote:
>
>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.
>>
>>