100 mA Line Driver (CB20921E)

This low distortion circuit was found in 80's Analog Devices documentation. The used integrated circuits are not very common today.

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Ocean Sound Generator (CB25489E)
This circuit called “surf man” was published in the August 1992 Radio Electronics magazine. It...
Oscillator triggered by light (CB20355E)
This Hartley oscillator uses an audio output transformer that can be obtained from small, unused...
Bipolar Transistor Colpitts Oscillator (CB4582E)
The oscillator shown in the figure can generate signals between 3 and 15 MHz approximately, depending...