Fourth Order Low Pass Filter (CB14925E)

This filter, with a cut-off frequency of approximately 1 kHz, has a high Q and employs two operational ones. The power supply must be symmetrical.

| Clique na imagem para ampliar |

Astable with Operational II (CB14061E)
This traditional circuit is from a 1972 RCA technical publication. The circuit can be developed with...
Two Transistor Siren (CB4210E)
This well-known siren configuration using complementary transistors is from a 1980s documentation. The...
FET Follower (CB6132E)
This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies...