This circuit, found in a 1977 documentation, indicates when the grid voltage goes through zero. Under these conditions, it produces an output pulse whose duration depends on the capacitor.
Found in a 1965 Motorola documentation, this circuit uses a neon lamp as a trigger element. The SCR...
A very interesting integrated circuit for step-down converter designs (voltage reducers) with an...
The operational used is uncommon today, but equivalents can be used. Unlike the previous one, this...