Electronics Dice 4017 (CB26047E)

This circuit was found in the May 1998 issue of Electronics Now magazine. The circuit drives a set of LEDs.

Programmable Sequential (CB18156E)
This circuit works with small 5 V incandescent lamps but can be modified to operate with LEDs. The...
Bass Booster LM386 (CB13684E)
This low power bass booster is from the 1977 National Semiconductor Audio Handbook. The circuit is...
15V Negative Regulator (CB5465E)
This circuit is from an old documentation. Integrated circuit 723 is not common today. The power...