Making of a quartz main clock for slave clocks

[compet17]

Since a couple of years I have a Solari Dator slave clock that needed a new master clock to drive it. So I made one... with all old school 74-TTL and 40-CMOS chips and all the stuff I had in my drawers. Then designed a board, sent the data to PCBway in China and got some beautiful PCB's back about one week later.

Here is the video about it:

I also explain the schematic diagram...