Low frequency signal generator with high performance and composed of F007

Published:2011/4/21 6:00:00 Author:Ecco | Keyword: Low frequency, signal generator , high performance | From:SeekIC

The chart shows the low frequency signal generator circuit with high performance. The circuit is characterized by a steady increase performance, high output power, low waveform distortion. It is an ideal source of low frequency measurement signal. In the figure, the op amp A and its feedback network form a typical Wien oscillator, the oscillation frequency: f0 = 1/2. The output of RCA2 connecting to the OCL complementary push-pull amplifier may improve the circuit's load capacity. Operational amplifier A1 connected as the negative half-wave amplifier, and it forms a steady negative feedback circuit by combining with W1, R4, C1, T1 and other components. Potentiometer W1 adjusts the output rate, and it is used as sampler in the feedback loop. In order to ensure small waveform distortion, generally it should make R1C1 ≥ 20πRC. The circuit output amplitude is 0.5 ~ 5V, output current is 0 ~ 1A, the frequency adjustment range is 10Hz ~ 10kHz, the output resistance is less than or equal to 0.05Ω, harmonic distortion is less than 0.1%.



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