The sources of the following circuits are contained in the Sources section, which begins on page 173. The figure number contained in the box of each circuit correlates to the source entry in the Sources section.
Resistance-Controlled Digital Oscillator
Cassette Bias Oscillator
Oscillator Adjustable Over 10:1 Range
1-Second 1-kHz Oscillator
Low-Distortion Sine-Wave Oscillator
Tunable Single-Comparator Oscillator
Wide-Range Oscillator (Frequency Range of 5000:1)
Programmable-Frequency Sine-Wave Oscillator
Variable Wien-Bridge Oscillator
50% Duty-Cycle Oscillator
Quadrature Oscillator ...