Pentode Mixer (T295E)

This circuit is from 1964 documentation. Its purpose is to mix RF signals to obtain the beat frequency in communications applications.

Gain-1000 Amplifier Using the 741 (CB257E)
The voltage gain of this circuit is 1,000. This gain is given by the ratio between the 10 M ohm...
Darlington Power Switch (CB993E)
This circuit was found in an old publication about transistors. The circuit can be used to drive...
240 kHz amplifier using the LF356 (CB3994E)
The circuit presented with low drift is from the Motrorola LinearDatabook of 1990. The circuit...