Motion Detector (CB6662E)

This Philips circuit of the 70's makes use of components of the time. The DZD40 is an uncommon integrated circuit today.

| Clique na imagem para ampliar |

Proximity alarm (CB8195E)
Found in a 90s Popular Electronics, this circuit is based on a common CMOS component. The circuit...
Triangular generator (CB21336E)
Taken from an Electronics Now from the 90s, this circuit generates signals whose frequency depends on...
12 V x 1 A Power Supply 7812 IC (CB24822E)
This power supply uses a single-winding transformer. We found it in July 1984 Radio Electronics magazine....