5V switch (CB8705E)

Found in a 90s EDN, this circuit makes use of period components. The maximum current depends on the MOSFET.

| Clique na imagem para ampliar |

SCR mechanical drive (CB6572E)
This contact or reed switch actuation was found in a 1964 Electronic Design. The circuit can be...
Simplified 2-bit decoder 7400 (CB22422E)
This is the previous version, but with a simplification given by the use of the 7404 and 7408...
Microphone Signal Conditioner (CB15601E)
In the figure we present a circuit of a microphone signal conditioner using the SSM2167 integrated...