Abstract
A transistorized circuit complete with a modified form of the Wien network in the feedback path is described. The circuit is shown to form a selective amplifier and an oscillator when a regenerative current feedback occurs through the filter. A passive element in the transistor circuit is made adjustable, which determines the selectivity of the circuit when used as an amplifier. Beyond a certain critical value of this element the system oscillates, generating sine wave oscillations. Theoretical analysis of the circuit is made and the results obtained are experimentally verified.
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