Power 15 vs 20 is detailed in the hardware manual when to use which
On Sun, Oct 22, 2023, 4:27 AM Chris Zach via cctalk
wrote:
> >
> https://vintagecomputer.net/digital/PDP11-40/PDP11-40_DC-pwr-supplies.jpg
>
> That brings up a question that's rattled around my mind: On a 745 it's
> rated to
I haven't looked at this in a long time, but I believe the H742 "bulk power
supply" puts out a voltage to the regulators to convert to the required
voltages. I don't remember what the voltage is.
Paul
On Sun, Oct 22, 2023 at 3:27 AM Chris Zach via cctalk
wrote:
> >
>
> https://vintagecomputer.net/digital/PDP11-40/PDP11-40_DC-pwr-supplies.jpg
That brings up a question that's rattled around my mind: On a 745 it's
rated to supply -15 volts at 10a, but it has two of the lines designated
as "+15 in". Where did the +15 come from, the other supplies put out
+20,
I have a 11/35 buried in my garage. Contact me off list if you’re unable to
find what you need and I’ll get you some pictures.
Kirk
Sent from my iPad
> On Oct 21, 2023, at 12:55 AM, Marc Howard via cctalk
> wrote:
>
> Hi,
>
> I have a PDP-11/40 that I've wanted to restore for many
Here is one where I put the H742 on a block to make it easier to work on
https://vintagecomputer.net/digital/PDP11-40/H742_on_blocks.jpg
Here are the connectors to the regulators:
https://vintagecomputer.net/digital/PDP11-40/PDP11-40_DC-pwr-supplies.jpg
Here is the other end of the connectors
Vintagecomputer.net/digital/ hunt around there many pics of the power
supplies, various configurations.
On Sat, Oct 21, 2023, 3:55 AM Marc Howard via cctalk
wrote:
> Hi,
>
> I have a PDP-11/40 that I've wanted to restore for many years now. I got
> it in the standard 21" cabinet but the power
