Finnaly some time left - so PSU is now alive 
It uses BD911 and stack of 6 9V1 zeners - so I have 56,6V at the output - I guess that's quite OK (~3,5V lower than original design) and probably I will not try to change them for 3x20V Zeners ... The thing is - that part of PSU was allready build before reading Grey's advice ...
Interesting about the fact of slightly quieter zeners in 5-6V range!!
So now I'll have to make both channels of the ALpeh L on small protoboards and than start slowly connecting all different parts of my Mini Integrated Aleph ... And of course - there ares ome openings to be done on the chassis ... And eloxation ...
Right now it looks like this:
It uses BD911 and stack of 6 9V1 zeners - so I have 56,6V at the output - I guess that's quite OK (~3,5V lower than original design) and probably I will not try to change them for 3x20V Zeners ... The thing is - that part of PSU was allready build before reading Grey's advice ... Interesting about the fact of slightly quieter zeners in 5-6V range!!
So now I'll have to make both channels of the ALpeh L on small protoboards and than start slowly connecting all different parts of my Mini Integrated Aleph ... And of course - there ares ome openings to be done on the chassis ... And eloxation ...
Right now it looks like this:
