The A146 is a low frequency oscillator which produces periodic control voltages over a wide range of frequencies. The LFO can be used as a modulation source such as pulse width, frequency modulation of a VCO (vibrato), modulation of a VCF cut-off frequency or amplitude modulation of the VCA (Tremolo).
Three outputs are available with different waveforms Sawtooth/Triangle, Square Wave and positive voltage square wave. The waveform is continuously adjustable from rising sawtooth through triangle to falling sawtooth. The same control affects the pulse width of the square wave, A three way switch can select one of three frequency ranges from one cycle every few minutes at the lowest up to audio frequency at the highest.