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1_kHz_WlEN_BRIDGE

2016-05-19 04:36  
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1_kHz_WlEN_BRIDGE
Closed-loop gain of 10, fixed by ratio of R1 to R2, is sufficient to avoid spurious oscillations. Frequency is easily changed by using different values for capacitors C1. R3 and lamp L1 provide amplitu e-stabilizing negative feedback. Supply can be 9 V.- Audio Handbook, National Semiconductor. Santa. Clara. CA, 1977. p 4-30-4-33.