Bridge Balance Indicator (CB6068E)

This Texas Instruments circuit is from the 80's. However, it can be implemented with modern operating systems. The power supply must be symmetrical.

| Clique na imagem para ampliar |

VFO with FET (CB4053E)
This circuit for the 3.5 MHz band (80 meters) was found in an old radio amateur documentation. The circuit...
Multiple Voltage Relay Activation (CB4155E)
This circuit allows selective relay actuation in the same line according to the applied voltage....
Tunnel Diodo 3 to 360 MHz Oscillator (CB1336E )
This circuit was found in documentation from the 1980s requiring a variable power supply from 0 to...