FET Colpitts Oscillator (CB22394E)

This ultra-simple circuit has the frequency determined by the LC network. Any general purpose JFET can be used.

Telephone Amplifier II (CB19340E)
We found this telephone amplifier in a European publication from the 1980s. The transistor can be...
1.3 Ohm Analog Switch (CB15566E)
In figure 1 we have an application for NLAS5113, a new device from on Semiconductor...
Current Booster (CB6973E)
We found this circuit in a Popular Electronics from the 90s. Transistors can be modern...