This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to drive 6 flashing LEDs.
We found this circuit in the 1994 Linear Applications Handbook from National Semiconductor. The...
This circuit is from an Electronics World of 1968. The transistors are of the time and the power...
This circuit checks the infrared emission of a common remote control. We found it in the March 1993...