Low frequency oscillator

A low frequency oscillator (LFO) produces cyclical waveforms at low enough frequencies to be useful as control voltages. The only way an LFO differs from other classes of VCO is the frequency ranges available - i.e. not all cyclic oscillations lie within the audio frequency range (though this doesn't mean you can't hear them necessarily - a Clock oscillator can sound like a series of regular clicks).

Usually some or all of the following are available - sine, triangle, square, sawtooth waves and random/pseudo-random. An LFO can be used as a modulation source for pretty much any module with a cv input - for instance modulating the frequency of a VCO (vibrato) or amplitude modulation with a VCA (tremolo). It is worth noting many can act as audio frequency oscillators and may have reset, sync and other functions more commonly found on other VCOs.

Feel free to add to this list. See also: Modules by Function

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Manufacturer	Module	Width hp	Depth mm	Depth in	Power mA	Comment	Product Page
Analogue Solutions	LFo-NZ	6				VC LFO with noise	LFO-NZ
Analogue Systems	RS80	12			25	VC LFO	RS-80
Analogue Systems	RS85	12				Extended VC LFO	RS-85
Bubblesound	uLFO	14	60	2,5	100	VC LFO, shaped sine	uLFO
Cwejman	D-LFO	12	21	0.83	45	Multi Function Dual LFO	D-LFO
Cwejman	PH-4	10	21	0.83	40	4 Phase Modulator	PH-4
Doepfer	A143-1	28			70	Quad AD/LFO	A-143-1
Doepfer	A143-3	14			70	Quad LFO	A-143-3
Doepfer	A143-9	8			40	VC Quadrature LFO	A-143-9
Doepfer	A145	8			30	Standard LFO	A-145
Doepfer	A146	8			20	variable waveform LFO	A-146
Doepfer	A147	8			40	VC LFO	A-147
Intellijel	Mind Meld	8			< 2	Livewire Vulcan Expander	Mind Meld
Livewire	Vulcan Modulator	14	50	1,97	80	Dual VC LFO + sum,diff,min,max	Vulcan
MFB	Dual LFO	8			30	DUAL VC LFO	Dual LFO

5U

Manufacturer	Module	Width	Power	Comment	Product Page
Corsynth	C102 VC LFO	1MU	+-15VDC 30ma max	Voltage Controlled LFO	C102
Grove Audio	GMS-782	4.250" (2MU)	+-15VDC at 50ma max	Dual VC LFO/VCA	GMS-782
MOTM Synthesis Technology	MOTM-320	3.470" (2U)	+-15VDC at 45ma max	Voltage-Controlled LFO	MOTM-320
MOTM Synthesis Technology	MOTM-380	1.735" (1U)	+-15VDC at 10ma max.	Quad LFO (Low-Frequency Oscillator)	MOTM-380
Oakley Sound Systems	VC LFO	1U		Voltage Controlled Low Frequency Oscillator	VC LFO
Oakley Sound Systems	Little LFO	1U		Little LFO	Little LFO
MegaOhm Audio	Two LFO	1U	dotcom/MOTM	2 different LFO, 1 with variable shape	Two LFO
Synthetic Sound Labs	SSL 1250	1U	dotcom	4 LFOs, each with 2 ranges	Quad LFO

Frac

Manufacturer	Module	Width	Power	Comment	Product Page

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