Three-phase generator 4017 (CB21043E)

This circuit generates rectangular signals with 3-phase outputs. The circuit is from an Electronic Design from the 90s.

| Clique na imagem para ampliar |

Two Transistor Siren (CB4210E)
This well-known siren configuration using complementary transistors is from a 1980s documentation. The...
Light Beam Operated Relay (CB4956E)
This circuit was found in an old American magazine and could make use of more modern components...
RIAA Preamp (CB1260E)
This circuit is from the Philips integrated circuits manual of 1990. It is intended for magnetic...