Flashing Alarm (CB17992E)

This 2002 circuit uses many more electrical components than electronics. The keys are common, and the alarm is a common clock that has this feature.

| Clique na imagem para ampliar |

CMOS Operational Interface (CB13773E)
This circuit is from the 1977 RCA CMOS Integrated Circuit from the RCA of 1977. The power supply of...
Ultrasonic Pickup (CB13321E)
The MOS field effect transistors of this circuit are not very common, as it is a project from the...
SCR and LDR Light Alarm (CB16416E)
This circuit triggers a relay when a pulse of light hits the LDR. The potentiometer serves as a...