Common gate stage (CB7470E)

This circuit for FET was obtained from a 1977 Radio Handbook. The input impedance is 150 ohm. The output is high impedance.

Optical Link Receiver (CB4945E)
This is a possible circuit for the receiver of the previous circuit. Other circuits can be found...
Powerful FM Transmitter (CB18668E)
This small transmitter with 2 transistors can reach several hundred meters using a 30 to 70 cm...
Logic Controlled Latching Relay (CB25739E)
Using the 4001 integrated circuit, this latching relay can employ any general-purpose transistor. The...