15 Sep
2010
15 Sep
'10
7:36 a.m.
Dave,
At http://www.hpmuseum.net/display_item.php?hw=171 at the documentation
section you find the diagrams made by Tony.
For the crowbar I use a zener SCR/Thyristor construction, I didn't made one
for the negative voltages.
But I have had one memory board destroyed due to a missing neg. voltage, I
had to replace almost all the memory chips.
If you search the archive you'll find the posts about it.
I do have some spares if you need something let me know.
-Rik