The movement of the LEDs in this circuit mimics the back-and-forth movement of a pendulum, making it suitable for clock projects. The circuit is from a Radio Electronics magazine from May 1978.
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...