Transformer feedback oscillator circuit

Published:2011/6/4 11:18:00 Author:John | Keyword: Transformer, oscillator | From:SeekIC

The easiest way to introduce positive feedback is to use transformer feedback method, just as shown in the figure. Replace the input voltage of the feedback voltage. And transformer feedback oscillator circuit is achieved. Circuit Analysis: ★ Observe the circuit to find that there are amplifier, frequency selective network, positive feedback network and amplitude part achieved by nonlinear characteristics of used transistors;★ Determine whether amplifier circuit is normal or not. Amplification circuit shown in the circuit is the typical operating point stabilizing circuit, which can be used to set the appropriate static operating point; ★ Exchange pathway shown in the figure indicates that there is no open or short circuit during the signal exchanging process. And the circuit can be amplified normally;★ Use instantaneous polarity method to determine whether the circuit is able to meet equilibrium conditions or not (specific approach).



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