Pulse Scrambler (CB20547E)

This circuit assumes that a pulse produced by S1 has a constant duration determined by R1 and C1.

Positive Ramp Generator (CB13450E)
This circuit was obtained in an old American documentation, remembering that the 566 is the double...
Touch Didactic Counter (CB4466E)
At each touch of the sensor this counter based on circuit 4017 advances one LED. The circuit can be...
Crystal Controlled TTL Oscillator (CB10927E)
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...