WIEN BRIDGE OSCILLATOR CIRCUIT


Posted on Feb 7, 2014

A 741 op amp is connected to a Wien-bridge, audio-sine-wave oscillator configuration, with C1, C2, R1, and R2 determining the circuit`s operating frequency. With the use of NPO capacitors and metal-film resistors, the oscillator`s frequency is stable enough for use in tone-control applications. The fixed-frequency oscillator shown can easily be co


WIEN BRIDGE OSCILLATOR CIRCUIT
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nverted into a tunable oscillator by substituting a dual-gang linear potentiometer for R1 and R2. Different frequency ranges can be covered by using other matched values for C1 and C2. Larger values produce lower frequencies, and vice versa for small values.




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