The Doepfer ‘A-145 LFO’ is a basic low frequency oscillator Eurorack module which produces cyclical control voltages in a very wide range of frequencies. Five waveforms are available: sawtooth, inverted sawtooth, triangle, sine and square wave. The LFO can be used as a modulation source for any number of modules - for instance modulating the pulse width or frequency of a VCO, modulation of the cut-off frequency of a VCF, or amplitude modulation with a VCA. A three-way switch lets users select three frequency ranges, spanning from one cycle every several minutes at the lowest, to moderate audio frequency at the highest (about 4-5 kHz). The LFO signal can also be synchronized, via the reset input. 

Features

• Low Frequency Oscillator Module
• Frequency Control
• Frequency Range Select Switch: M/H/L
• Five Available Waveforms: Sawtooth, Inverted Sawtooth, Triangle, Sine, and Square Wave
• Reset CV Input