Cascading the 4017 (CB25913E)

With this circuit any number of 4017 integrated circuits can be connected in series. The circuit is from a Radio Electronics from April 1989.

| Clique na imagem para ampliar |

10 LED Scale (CB9813E)
Found in a documentation from the 90's, this circuit uses only one integrated circuit. The...
Power Supply for Alarms (CB16777E)
This power supply originally created for the CB16776E project but can be used for any type of 12 V...
100 Hz Oscillator (CB20350E)
The original purpose of this circuit, which we find in old American documentation, is to modulate an...