High Impedance Bridge Amplifier (CB4013E)

This circuit is from Motorola's 1990 Linear Databook. We can implement it with other operational amplifier. The power supply must be symmetrical.

| Clique na imagem para ampliar |

Tone Decoder (CB5146E)
This circuit was found in a 1980s documentation. It decodes by identifying a certain frequency tone...
Simple Microphone Preamplifier (CB4768E)
This circuit was found in a Popular Electronics of the 90s. The output amplitude will be between...
Head and Tail CMOS (CB4880E)
We find this simple circuit that operates at a frequency of 5 to 10 MHz in an old English...