This circuit digitally counts input pulses. The circuit from a November 1970 Radio Electronics uses unijunction programmable transistors. Note the counted pulse duration.
The article that teaches the assembly is from a Radio Electronics issue from July 1969. The...
The aim of this circuit is the protection of a 2N3055 transistor, avoiding the overheat. The...
This single trigger circuit has been indicated for photography applications. The circuit is from a...