Antenna Amplifier (CB26118E)

This circuit for analog VHF televisions was found in the 1989 Radio Electronics Experimenter magazine. It also works for FM receivers.

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LM317K Regulator (CB24817E)
We found this variable regulator circuit in a Radio Electronics issue from July 1984. It is one of...
High Impedance Instrumentation Buffer MC4741 (CB15268E)
The MC4741 consists of a quadruple 741. The power supply must be symmetrical, and the resistors must be...
Three-phase motor control (CB7268E)
Suggested by Sprague in the 1980s documentation, this circuit can control three-phase AC motors....