Frequency divider for 10 MHz standard (CB21041E)

This circuit was found in a Radio Electronics from the 90's. It provides lower frequency signals from a 10 MHz pattern generator.

| Clique na imagem para ampliar |

Sound operated switch (CB9214E)
This circuit was found in a Hands On Electronics from the 90s. The microphone is a small 75-ohm...
FET Stage with Gate Offset Adjustment (CB26251E)
This JFET amplifier stage was found in the Encyclopedia of Electronic Circuits Volume 5 from 1995....
Optimized Operational (CB15106E)
To obtain more output power from an operational amplifier, we can use a transistor, as shown in...