30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

| Clique na imagem para ampliar |

Absolute Value Amplifier (CB19771E)
This circuit, in addition to providing an output that corresponds to the absolute value of the...
Power on reset (CB7176E)
These reset circuits when the power is turned on were found in an 80's EDN. The circuit also...
FM transmitter (CB12125E)
This circuit is from a publication by Newton C. Braga in the United States. The transistor can be...