Crystal Pierce Oscillator (CB6149E)

This circuit uses a 100 kHz crystal, but nearby frequencies can be obtained with appropriate crystals. Components are still common today.

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DC Motor Linear Control (CB11267E)
This simple speed control for 3 to 15 V motors uses a common power transistor. The circuit was...
Quadrature Oscillator (CB12742E)
The quadrature oscillator is another type of phase shift oscillator, where each of the three...
250 mW Amplifier with Bass Suppression (CB14578E
) The integrated circuit used is uncommon today. The circuit is suggested by Motorola's Linear...