Low Frequency Oscillator Circuit


Here is low frequency oscillator circuit. The low frequency oscillator circuit for testing tone controls and experimenting. The timing components, R1, R2, C1 and C3 dictate the oscillation frequency. In use preset RV1 is adjusted so that oscillation just begins. The low frequency oscillatorĀ circuit is a standard RC phase shift oscillator using a single bipolar transistor as the active element. When power is applied regenerative feedback is applied via C2 from collector to base of the transistor. Using R2 values higher than 1k or so may cause inaccuracy due to the attenuator loading. If desired, the output across RL can be attenuated. Here is a schematic low frequency oscillator circuit:

Low Frequency Oscillator Circuit

Simply replace RL with two resistors R1 and R2 according to the low frequency oscillatorĀ table below:

Low Frequency Oscillator Table


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