10 W Amplifier (CB6287E)

For an 8 ohm load, this Motorola circuit was found in a 1968 documentation. The transistors are of the time and the power supply must be symmetrical.

| Clique na imagem para ampliar |

741 Twin T Variable Filter (CB25604E)
This filter, which rejects frequencies around 1 kHz, was found in the August 1993 Electronics Now...
Current to voltage converter (CB5283E)
This circuit is from a 2005 Linear Technology publication. It converts current into load sensing...
Binary to decimal converter (CB6583E)
This circuit is from an old American documentation using as indicators for the flip-flops neon...