This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to drive 6 flashing LEDs.
We found this function generator with two FET operators in a 1996 Texas Instruments application manual....
This circuit was obtained from an English magazine from 1979, but can be easily assembled today...
The integrated circuit used in this 2002 project is not very common. It is powered directly by the...