Programmable Twin T Band Pass Filter (CB6244E)

This circuit was found in an American 1980s documentation. Dual FETs can be replaced by single equivalents. Control voltage ranges from 0 to 1 V.

| Clique na imagem para ampliar |

FM Receiver via Power Grid (CIR25197E)
Unlike the previous one, this circuit is intended for the reception of frequency modulated signals...
Visible light transmitter (CB7852E)
This modulated light transmitter was found in a 90s Popular Electronics. In place of the lamp with...
Short Circuit Proof Lamp Driver (CB6850E)
This circuit from the 90s, found in an Electronic Engineering can be used as a shield since its...