An oscillator is a device or circuit that converts a constant power supply such as direct current (DC) into a fluctuating current or signal. This converted signal can be alternating current (AC) or fluctuating DC. The specific oscillators covered in this course are the Armstrong oscillator; the Hartley oscillator; the Colpitts oscillator; the phase shift oscillator; and bistable, monostable, and astable multivibrators.
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