Melody Generator (CB25350E)

Based on an LS3404 this circuit was found in the July 1990 issue of Radio Electronics magazine.

| Clique na imagem para ampliar |

Rectangular Oscillator (CB12973E)
The oscillator shown in the figure generates a rectangular signal with a 50% active cycle (square)...
General purpose amplifier (CB8950E)
This circuit was obtained in a QST magazine from the 90s. The circuit makes use of components that are...
Delayed lighting (CB22107E)
This 12V incandescent lamp switch with time delay was found in old documentation. The SCR can be...