Oscillator HA7210 (CB22402E)

This circuit is from an old documentation and can be used to generate signals in different frequency bands.

6-LED Sequential 2 (CB20455E)
This circuit operates according to the same principle as the previous one, but it has a difference in...
Tunnel Diode Spy Transmitter 3 (CB14864E)
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...
Interface with ULN2001 2002 2003 2004 (CB15486E)
The integrated circuits of the ULN2001 / 2/3/4 series also known as MC1411 / 12/13/14 consist of...