Three-Decade 15Hz To 15Khz Wien-Bridge Oscillator

Posted on Feb 13, 2013

In this circuit, an LM741 op amp drives a Wien-bridge network using two zener diodes as

Three-Decade 15Hz To 15Khz Wien-Bridge Oscillator
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an amplitude limiter. Range selection is done by switch selecting the capacitors (CI through C6) and tuning is done via a ganged pot. The output is about 8 Vpp max., depending on the setting of S2 and R6. R4 is set for maximum distortion consistent with stable output.

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